<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.19.3</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>122</ContextCount>
  <ElementCount>313</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>48</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>7</UnitCount>
  <MyReports>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00100 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/StatementConsolidatedBalanceSheets</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/StatementConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00200 - Statement - CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/StatementConsolidatedStatementsOfIncomeAndComprehensiveIncome</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00300 - Statement - CONSOLIDATION STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/StatementConsolidationStatementsOfChangesInShareholdersEquity</Role>
      <ShortName>CONSOLIDATION STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00400 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/StatementConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>10101 - Disclosure - ORGANIZATION AND BUSINESS DESCRIPTION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureOrganizationAndBusinessDescription</Role>
      <ShortName>ORGANIZATION AND BUSINESS DESCRIPTION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>10201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>10301 - Disclosure - ACCOUNTS RECEIVABLE, NET</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureAccountsReceivableNet</Role>
      <ShortName>ACCOUNTS RECEIVABLE, NET</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>10401 - Disclosure - DEFERRED OFFERING COSTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureDeferredOfferingCosts</Role>
      <ShortName>DEFERRED OFFERING COSTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>10501 - Disclosure - INVENTORIES, NET</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureInventoriesNet</Role>
      <ShortName>INVENTORIES, NET</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>10601 - Disclosure - PROPERTY AND EQUIPMENT, NET</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosurePropertyAndEquipmentNet</Role>
      <ShortName>PROPERTY AND EQUIPMENT, NET</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>10701 - Disclosure - ACCRUED EXPENSE AND OTHER PAYABLES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureAccruedExpenseAndOtherPayables</Role>
      <ShortName>ACCRUED EXPENSE AND OTHER PAYABLES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>10801 - Disclosure - TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureTaxes</Role>
      <ShortName>TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>10901 - Disclosure - SHAREHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureShareholdersEquity</Role>
      <ShortName>SHAREHOLDERS' EQUITY</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>11001 - Disclosure - RELATED PARTY TRANSACTIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureRelatedPartyTransactions</Role>
      <ShortName>RELATED PARTY TRANSACTIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>11101 - Disclosure - COMMITMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureCommitments</Role>
      <ShortName>COMMITMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>11201 - Disclosure - SEGMENT REPORTING</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSegmentReporting</Role>
      <ShortName>SEGMENT REPORTING</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>11301 - Disclosure - SUBSEQUENT EVENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSubsequentEvents</Role>
      <ShortName>SUBSEQUENT EVENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>20202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>30203 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesTables</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>30303 - Disclosure - ACCOUNTS RECEIVABLE, NET (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureAccountsReceivableNetTables</Role>
      <ShortName>ACCOUNTS RECEIVABLE, NET (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureAccountsReceivableNet</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>30503 - Disclosure - INVENTORIES, NET (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureInventoriesNetTables</Role>
      <ShortName>INVENTORIES, NET (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureInventoriesNet</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>30603 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosurePropertyAndEquipmentNetTables</Role>
      <ShortName>PROPERTY AND EQUIPMENT, NET (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosurePropertyAndEquipmentNet</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>30703 - Disclosure - ACCRUED EXPENSE AND OTHER PAYABLES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureAccruedExpenseAndOtherPayablesTables</Role>
      <ShortName>ACCRUED EXPENSE AND OTHER PAYABLES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureAccruedExpenseAndOtherPayables</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>30803 - Disclosure - TAXES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureTaxesTables</Role>
      <ShortName>TAXES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureTaxes</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>31003 - Disclosure - RELATED PARTY TRANSACTIONS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureRelatedPartyTransactionsTables</Role>
      <ShortName>RELATED PARTY TRANSACTIONS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureRelatedPartyTransactions</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>31103 - Disclosure - COMMITMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureCommitmentsTables</Role>
      <ShortName>COMMITMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureCommitments</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>31203 - Disclosure - SEGMENT REPORTING (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSegmentReportingTables</Role>
      <ShortName>SEGMENT REPORTING (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureSegmentReporting</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>40101 - Disclosure - ORGANIZATION AND BUSINESS DESCRIPTION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureOrganizationAndBusinessDescriptionDetails</Role>
      <ShortName>ORGANIZATION AND BUSINESS DESCRIPTION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureOrganizationAndBusinessDescription</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>40201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>40202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Consolidation of Variable Interest Entities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesConsolidationOfVariableInterestEntitiesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Consolidation of Variable Interest Entities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>40203 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash, Accounts Receivable and Inventories (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesCashAccountsReceivableAndInventoriesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash, Accounts Receivable and Inventories (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>40204 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment, net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertyAndEquipmentNetDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment, net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>40205 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>40206 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Income Taxes, Vat, Foreign currency translation and EPS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesIncomeTaxesVatForeignCurrencyTranslationAndEpsDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Income Taxes, Vat, Foreign currency translation and EPS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>40207 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration and Credit Risk (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSummaryOfSignificantAccountingPoliciesConcentrationAndCreditRiskDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration and Credit Risk (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>40301 - Disclosure - ACCOUNTS RECEIVABLE, NET (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureAccountsReceivableNetDetails</Role>
      <ShortName>ACCOUNTS RECEIVABLE, NET (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureAccountsReceivableNetTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>40302 - Disclosure - ACCOUNTS RECEIVABLE, NET - Allowance for doubtful accounts (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureAccountsReceivableNetAllowanceForDoubtfulAccountsDetails</Role>
      <ShortName>ACCOUNTS RECEIVABLE, NET - Allowance for doubtful accounts (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>40401 - Disclosure - DEFERRED OFFERING COSTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureDeferredOfferingCostsDetails</Role>
      <ShortName>DEFERRED OFFERING COSTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureDeferredOfferingCosts</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>40501 - Disclosure - INVENTORIES, NET (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureInventoriesNetDetails</Role>
      <ShortName>INVENTORIES, NET (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureInventoriesNetTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>40601 - Disclosure - PROPERTY AND EQUIPMENT, NET (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosurePropertyAndEquipmentNetDetails</Role>
      <ShortName>PROPERTY AND EQUIPMENT, NET (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosurePropertyAndEquipmentNetTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>40701 - Disclosure - ACCRUED EXPENSE AND OTHER PAYABLES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureAccruedExpenseAndOtherPayablesDetails</Role>
      <ShortName>ACCRUED EXPENSE AND OTHER PAYABLES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureAccruedExpenseAndOtherPayablesTables</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>40801 - Disclosure - TAXES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureTaxesDetails</Role>
      <ShortName>TAXES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureTaxesTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>40802 - Disclosure - TAXES - Income tax (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureTaxesIncomeTaxDetails</Role>
      <ShortName>TAXES - Income tax (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>40803 - Disclosure - TAXES - Components of the income tax provision (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureTaxesComponentsOfIncomeTaxProvisionDetails</Role>
      <ShortName>TAXES - Components of the income tax provision (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>40804 - Disclosure - TAXES - Summarizes deferred tax assets resulting from differences between the financial reporting basis and tax basis of assets and liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureTaxesSummarizesDeferredTaxAssetsResultingFromDifferencesBetweenFinancialReportingBasisAndTaxBasisOfAssetsAndLiabilitiesDetails</Role>
      <ShortName>TAXES - Summarizes deferred tax assets resulting from differences between the financial reporting basis and tax basis of assets and liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>40805 - Disclosure - TAXES - Reconciliation of statutory rates to the Company?s effective tax rate (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureTaxesReconciliationOfStatutoryRatesToCompanySEffectiveTaxRateDetails</Role>
      <ShortName>TAXES - Reconciliation of statutory rates to the Company?s effective tax rate (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>40806 - Disclosure - TAXES - Taxes payable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureTaxesTaxesPayableDetails</Role>
      <ShortName>TAXES - Taxes payable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>40901 - Disclosure - SHAREHOLDERS' EQUITY (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureShareholdersEquityDetails</Role>
      <ShortName>SHAREHOLDERS' EQUITY (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureShareholdersEquity</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>40902 - Disclosure - SHAREHOLDERS' EQUITY - Statutory reserve (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureShareholdersEquityStatutoryReserveDetails</Role>
      <ShortName>SHAREHOLDERS' EQUITY - Statutory reserve (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>41001 - Disclosure - RELATED PARTY TRANSACTIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureRelatedPartyTransactionsDetails</Role>
      <ShortName>RELATED PARTY TRANSACTIONS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureRelatedPartyTransactionsTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>41101 - Disclosure - COMMITMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureCommitmentsDetails</Role>
      <ShortName>COMMITMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureCommitmentsTables</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>41102 - Disclosure - COMMITMENTS - Future minimum lease obligations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureCommitmentsFutureMinimumLeaseObligationsDetails</Role>
      <ShortName>COMMITMENTS - Future minimum lease obligations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="yzcm-20190630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>41201 - Disclosure - SEGMENT REPORTING (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.yzcmmedia.cn/role/DisclosureSegmentReportingDetails</Role>
      <ShortName>SEGMENT REPORTING (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.yzcmmedia.cn/role/DisclosureSegmentReportingTables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>yzcm-20190630.xml</File>
    <File>yzcm-20190630.xsd</File>
    <File>yzcm-20190630_cal.xml</File>
    <File>yzcm-20190630_def.xml</File>
    <File>yzcm-20190630_lab.xml</File>
    <File>yzcm-20190630_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://xbrl.sec.gov/country/2017-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/srt/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2019-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
