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Accounts Receivable, Net - Summary of Accounts Receivables And Related Allowance For Doubtful Accounts (Detail) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥)
--- | --- | --- | ---
Receivables [Abstract] |  |  |
Accounts receivable | ¥ 223,544,396 | $ 35,078,994 | ¥ 141,594,170
Less: Allowance for doubtful accounts | 0 | 0 | 0
Accounts receivable, net | ¥ 223,544,396 | $ 35,078,994 | ¥ 141,594,170

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