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Significant Accounting Policies - Revenue Recognition (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
Significant Accounting Policies |  |  |  |
Deferred revenue, revenue recognized | ¥ 2,944,900 |  | ¥ 2,760,500 | ¥ 2,583,600
Practical expedient related to performance obligations | true | true |  |
Total net revenues | ¥ 26,831,525 | $ 3,675,904 | 22,527,987 | 21,899,167
Mobile games |  |  |  |
Significant Accounting Policies |  |  |  |
Total net revenues | 5,610,323 |  | 4,021,137 | 5,021,290
Value-added services |  |  |  |
Significant Accounting Policies |  |  |  |
Total net revenues | 10,999,137 |  | 9,910,080 | 8,715,170
Advertising |  |  |  |
Significant Accounting Policies |  |  |  |
Total net revenues | 8,189,175 |  | 6,412,040 | 5,066,212
IP derivatives and others |  |  |  |
Significant Accounting Policies |  |  |  |
Total net revenues | ¥ 2,032,890 |  | ¥ 2,184,730 | ¥ 3,096,495
Maximum | Live broadcasting and other VAS |  |  |  |
Significant Accounting Policies |  |  |  |
Period recognized for time-based virtual item | 1 year | 1 year |  |

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