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Summary of Significant Accounting Policies (Details) - Schedule of Revenue Recognition
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Schedule of Revenue Recognition [Line Items]        
Total revenue ¥ 497,868,200 $ 70,293,560 ¥ 651,991,593 ¥ 545,593,497
Point in time [Member]        
Schedule of Revenue Recognition [Line Items]        
Total revenue 158,069,415 22,317,678 71,448,443 53,531,895
Over time [Member]        
Schedule of Revenue Recognition [Line Items]        
Total revenue ¥ 339,798,785 $ 47,975,882 ¥ 580,543,150 ¥ 492,061,602