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Deferred Revenue/Income - Roll forward (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Summary of reconciliation in the current reporting period related to carried-forward deferred revenue |  |  |
Deferred revenue/income-beginning of year | ¥ 2,197,766 | ¥ 1,061,254 | ¥ 485,087
Additions | 2,483,462 | 1,934,086 | 1,013,397
Recognition | 1,124,186 | 795,878 | 432,069
Effects on foreign exchange adjustment | 4,848 | (1,696) | (5,161)
Deferred revenue/income-end of year | ¥ 3,561,890 | ¥ 2,197,766 | ¥ 1,061,254

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