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Inventories, Net (Details) - Schedule of Inventories, Net
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Schedule of Inventories, Net [Abstract]      
Raw materials ¥ 56,952,428   ¥ 69,914,306
Work in process 130,609,171   158,693,203
Finished goods 90,377,688   81,807,783
Less: write-down of inventories (265,064,301)   (208,213,546)
Inventories, net ¥ 12,874,986 $ 1,817,808 ¥ 102,201,746