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Prepayments (Details) - Schedule of Prepayments
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Schedule of Prepayments [Abstract]      
Prepayments – inventories and processing fee ¥ 14,645,763   ¥ 64,813,532
Prepayments – design fees 7,162,700   3,850,329
Prepayments – others 2,577,547   2,650,393
Total ¥ 24,386,010 $ 3,443,039 ¥ 71,314,254