v3.25.1
Revenue from Contracts with Customers - Schedule of Current or Non Current Liabilities (Details)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Revenue from Contracts with Customers - Schedule of Current or Non Current Liabilities (Details) [Line Items]      
Advance from customers ¥ 25,684,437 $ 3,518,753 ¥ 22,393,097
Deferred revenue-current 175,046,178 23,981,228 186,281,838
Deferred revenue-non-current 176,353,919 24,160,388 207,905,769
Total contract liabilities ¥ 377,084,534 $ 51,660,369 ¥ 416,580,704