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Leases (Details) - Schedule of balance sheet information related to operating lease
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Schedule Of Balance Sheet Information Related To Operating Lease Abstract      
Right-of-use assets ¥ 31,403,688 $ 4,509,044 ¥ 6,463,320
Operating lease liabilities – current 18,079,265 2,595,880 3,698,233
Operating lease liabilities – non-current 13,276,535 1,906,288 2,539,151
Total operating lease liabilities ¥ 31,355,800 $ 4,502,168 ¥ 6,237,384