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Short-Term Investments (Detail)	12 Months Ended
	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2021 USD ($)
Schedule of short term investment [Line Items]
gain or loss on the held-to-maturity time deposit	¥ 0		¥ 0		$ 0
interest income related to debt securities	¥ 26,373,471	$ 4,138,573	¥ 34,901,335	¥ 51,574,467

X

- Definition

Schedule of short term investment.

+ References

No definition available.

+ Details

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X

- Definition

Amount of gain (loss) in accumulated other comprehensive income (AOCI) for derivative hedging forecasted acquisition of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563

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X

- Definition

Amount of interest income, amortization of premium and accretion of discount, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading); classified as operating.

+ References

No definition available.

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