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v3.25.1

Principal Accounting Policies - Intangible assets, advertising and promotional expenses and foreign currency translation (Details) ¥ in Billions, $ in Billions | 12 Months Ended
--- | ---
Dec. 31, 2024 CNY (¥) $ / ¥ | Dec. 31, 2024 USD ($) $ / ¥ | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
Advertising and promotional expenses |  |  |  |
Advertising and promotional expenses | ¥ 10.9 | $ 1.5 | ¥ 10.4 | ¥ 10.0
Foreign currency translation |  |  |  |
Buying rate per US$ | 7.2993 | 7.2993 |  |
License right |  |  |  |
Intangible assets |  |  |  |
Estimated useful lives of assets | over the license period | over the license period |  |
Technology | Equal to or more than |  |  |  |
Intangible assets |  |  |  |
Estimated useful lives of assets | 7 years | 7 years |  |
Technology | Less than |  |  |  |
Intangible assets |  |  |  |
Estimated useful lives of assets | 10 years | 10 years |  |
Trademark |  |  |  |
Intangible assets |  |  |  |
Estimated useful lives of assets | 10 years | 10 years |  |

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