SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and equipment, net (Details) |
Mar. 31, 2026 |
|---|---|
| Electronic equipment | Minimum | |
| PROPERTY AND EQUIPMENT, NET | |
| Property and equipment, useful life | 3 years |
| Electronic equipment | Maximum | |
| PROPERTY AND EQUIPMENT, NET | |
| Property and equipment, useful life | 5 years |
| Office furniture | |
| PROPERTY AND EQUIPMENT, NET | |
| Property and equipment, useful life | 5 years |
| Transportation equipment | |
| PROPERTY AND EQUIPMENT, NET | |
| Property and equipment, useful life | 5 years |