SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of estimated useful lives of property and equipment (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2022 | |
| Digital display network equipment | |
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |
| Estimated useful lives | 5 years |
| Furniture and fixture | |
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |
| Estimated useful lives | 5 years |
| Computer and office equipment | Minimum | |
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |
| Estimated useful lives | 3 years |
| Computer and office equipment | Maximum | |
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |
| Estimated useful lives | 5 years |
| Vehicle | |
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |
| Estimated useful lives | 5 years |
| Software | |
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |
| Estimated useful lives | 5 years |
| Office property | |
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |
| Estimated useful lives | 40 years |