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Prepayments (Details) - Schedule of Prepayments | Jun. 30, 2023 CNY (¥) | Jun. 30, 2023 USD ($) | Dec. 31, 2022 CNY (¥)
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Schedule of Prepayments [Abstract] |  |  |
Prepayments – inventories and processing fee | ¥ 36,729,221 |  | ¥ 64,813,532
Prepayments – others | 5,694,920 |  | 6,500,722
Prepayments | ¥ 42,424,141 | $ 5,871,203 | ¥ 71,314,254

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