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Prepaid Expenses and Other Current Assets, Net (Details) - Schedule of Allowance of Doubtful Accounts
12 Months Ended
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Schedule of Allowance of Doubtful Accounts [Abstract]        
Beginning balance ¥ 237,704 $ 33,561 ¥ 4,744,565  
Addition 8,761,236 1,236,992 237,704  
Write off (25,493) (3,600) (4,744,565)
Ending balance ¥ 8,973,447 $ 1,266,953 ¥ 237,704 ¥ 4,744,565