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Net Gain (Loss) On Equity Securities, Net - Summary Of Gain Loss On Investment (Detail)	12 Months Ended
	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)
Investments, Debt and Equity Securities [Abstract]
Unrealized gain on equity securities still held at the reporting date	¥ 45,804,034	$ 7,187,652	¥ 3,315,475,734	¥ 41,581,818
Net gain (loss) on equity securities sold during the period	(58,795,556)	(9,226,306)	37,905,479	44,430,100
Total	¥ (12,991,522)	$ (2,038,654)	¥ 3,353,381,213	¥ 86,011,918

X

- Definition

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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- Definition

Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117546-209714

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- Definition

Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

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-Name Accounting Standards Codification
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