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Prepaid Expenses and Other Current Assets, Net (Details)
12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Disclosure Text Block Supplement [Abstract]        
Bad debt expense ¥ 237,704 $ 34,140 ¥ 144,687
Bad debt write off ¥ 4,744,565 $ 681,240