SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Term deposits (Details) - CNY (¥) |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Term deposits | ||
| Total term deposits held | ¥ 128,235,695 | ¥ 274,351,895 |
| RMB | ||
| Term deposits | ||
| Total term deposits held | 20,000,000 | |
| USD | ||
| Term deposits | ||
| Total term deposits held | ¥ 128,235,695 | ¥ 254,351,895 |