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Short-Term and Long-Term Debts - Summary of Long-Term Debts (Parenthetical) (Detail)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Debt Instrument [Line Items]
Long term debt	¥ 1,424,386,034	$ 223,517,251	¥ 2,206,574,921
Lease Financing [Member]
Debt Instrument [Line Items]
Long term debt	¥ 0	$ 0	¥ 401,761,874

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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