Principal Accounting Policies - Property and Equipment, Net (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2022 | |
| Electronic equipment | Maximum [Member] | |
| Property, Plant and Equipment [Line Items] | |
| Property equipment, useful life | 5 years |
| Electronic equipment | Minimum [Member] | |
| Property, Plant and Equipment [Line Items] | |
| Property equipment, useful life | 3 years |
| Furniture, computers and office equipment | |
| Property, Plant and Equipment [Line Items] | |
| Property equipment, useful life | 3 years |
| Network equipment | |
| Property, Plant and Equipment [Line Items] | |
| Property equipment, useful life | 3 years |
| Leasehold Improvements [Member] | |
| Property, Plant and Equipment [Line Items] | |
| Property, equipment estimated useful ife | Shorter of the lease term or the estimated useful life |
| Self-developed Software | Maximum [Member] | |
| Property, Plant and Equipment [Line Items] | |
| Property equipment, useful life | 5 years |
| Self-developed Software | Minimum [Member] | |
| Property, Plant and Equipment [Line Items] | |
| Property equipment, useful life | 3 years |