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Prepayments and other current assets - Schedule of prepayments and other current assets (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Jan. 01, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥)
--- | --- | --- | --- | --- | ---
Prepaid Expense and Other Assets, Current [Abstract] |  |  |  |  |
Prepayments to suppliers | ¥ 300,890 |  | ¥ 210,819 |  |
Contract cost assets | 104,309 |  | 192,848 |  |
Others | 36,284 |  | 21,251 |  |
Prepayments and other current assets | ¥ 441,483 | $ 62,181 | ¥ 424,918 | ¥ 240,647 | ¥ 247,411

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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-3 + Details
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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(9)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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