PREPAID EXPENSES AND OTHER CURRENT ASSETS - Additional Information (Details) - USD ($)	12 Months Ended
Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
PREPAID EXPENSES AND OTHER CURRENT ASSETS
Advance to employees for business development purposes, allowance for doubtful accounts	$ 1,350,615
Amortization of prepaid consulting expense	$ 861,360	$ 282,434	$ 0
Prepaid advertising service fee collected back		$ 400,895

Amount of amortization of other deferred costs recognized in the income statement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration