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Leases (Tables)

12 Months Ended

Dec. 31, 2022

Disclosure Text Block [Abstract]

Schedule of balance sheet information related to operating lease

		As of
		December 31,				December 31,
		2021				2022
		RMB				RMB				US$
Right-of-use assets			6,463,320				31,403,688				4,509,044
Operating lease liabilities – current			3,698,233				18,079,265				2,595,880
Operating lease liabilities – non-current			2,539,151				13,276,535				1,906,288
Total operating lease liabilities			6,237,384				31,355,800				4,502,168

Schedule of weighted average remaining lease terms and discount rates

Remaining lease term and discount rate:
Weighted average remaining lease term (years)			2.57
Weighted average discount rate			4.20	%

Schedule of future minimum payments

Year		Amounts
2023			19,078,380
2024			12,474,763
2025			202,248
2026			210,210
2027			210,210
Thereafter			781,282
Total lease payments			32,957,093
Less: imputed interest			(1,601,293	)
Total operating lease liabilities, net of interest			31,355,800

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Tabular disclosure of components of income from operating lease.

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-Publisher FASB
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Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions.

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Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.

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