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Commitments and Contingencies - Summary of Future Minimum Payments under Non-Cancelable Operating Leases (Detail) - Dec. 31, 2021	CNY (¥)	USD ($)
Commitments and Contingencies Disclosure [Abstract]
2022	¥ 15,710,485	$ 2,465,318
2023	14,124,342	2,216,417
2024	13,873,588	2,177,069
2025	13,459,582	2,112,102
2026	13,459,582	2,112,102
2027 and after	48,629,836	7,631,082
Total	¥ 119,257,415	$ 18,714,090

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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