v3.26.1
Taxes - Schedule of Changes in Valuation Allowance (Details) - Deferred Tax Asset [Member]
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Schedule of Changes in Valuation Allowance [Line Items]      
Balance at beginning of the year ¥ 84,581,663 $ 12,095,017 ¥ 83,381,457
Expiration of NOL (7,824) (1,119) (2,023,361)
Addition 10,639,820 1,521,474 4,185,912
Prior year true up of NOL (1,073,852) (153,559) (720,312)
Deregistration (696)
Change of tax rates (241,337)
Balance at end of the year ¥ 94,139,807 $ 13,461,813 ¥ 84,581,663