ORGANIZATION AND PRINCIPAL ACTIVITIES - The VIE arrangements (Details) - 12 months ended Dec. 31, 2025 |
$ / shares |
¥ / shares |
|---|---|---|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Standard equity interest purchase price | (per share) | $ 1.5 | ¥ 10 |
| Term (in years) | 10 years | 10 years |
| Annual service fee (as a percent) | 99.00% | 99.00% |
| Term of service agreement (in years) | 10 years | 10 years |