Goodwill - Schedule of Changes in Carrying Amount of Goodwill (Details)	12 Months Ended
Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Goodwill And Intangible Assets Disclosure [Abstract]
Balance as of January 1	¥ 100,231,487	$ 15,728,507	¥ 100,078,236
Acquisitions	20,588,461	3,230,779	153,251
Balance as of December 31	¥ 120,819,948	$ 18,959,286	¥ 100,231,487

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant