Leases (Details) |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2025
CNY (¥)
m²
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
CNY (¥)
|
Dec. 31, 2023
CNY (¥)
|
Dec. 31, 2025
USD ($)
m²
|
||||
| Leases [Line Items] | ||||||||
| Sublease income | ¥ 14,153,470 | $ 2,013,640 | ¥ 11,725,219 | [1] | ¥ 707,009 | |||
| Sublease cost | 12,013,832 | 1,709,229 | 11,088,503 | 858,098 | ||||
| Total operating lease expenses | 11,525,615 | 1,639,770 | 11,564,157 | 24,498,055 | ||||
| Deposit loss | 298,088 | 1,494,308 | ||||||
| Income from deposits acquired in subleases | 1,015,375 | |||||||
| Lease termination gain (loss) | 99,388 | $ 14,140 | 1,945,824 | ¥ (478,933) | ||||
| Derecognition of right-of-use assets | 5,772,980 | |||||||
| Lease liabilities | ¥ 6,685,177 | 2,710,673 | $ 951,112 | |||||
| Minimum [Member] | ||||||||
| Leases [Line Items] | ||||||||
| Lease liabilities | ¥ 8,016,892 | |||||||
| Leased area (in Square Meters) | m² | 100 | 100 | ||||||
| Maximum [Member] | ||||||||
| Leases [Line Items] | ||||||||
| Leased area (in Square Meters) | m² | 218 | 218 | ||||||
| ||||||||