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Accounts Receivable, Net (Details)
12 Months Ended
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Accounts Receivable, Net [Line Item]        
Bad debt expenses ¥ 9,417,342 $ 1,329,626 ¥ 700,505 ¥ 442,706
Written off ¥ 406,566 $ 57,402 ¥ 198,082