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Summary of Significant Accounting Policies - Additional information (Details) ¥ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 CNY (¥) segment | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥) | Jul. 31, 2022 CNY (¥)
Concentration Risk [Line Items] |  |  |  |
Government grants related to unfulfilled obligations | ¥ 53,668 | ¥ 0 | ¥ 0 |
Government grants income | 14,280 | 10,825 | 27,446 |
Income tax, unrecognized | ¥ 0 | 0 | ¥ 0 |
Number of operating segments | segment | 2 |  |  |
Fair value investments recognized | ¥ 0 | ¥ 0 |  | ¥ 30,000
Revenue | Customer concentration | Customer A |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of concentration risk | 25.60% | 24.30% |  |
Revenue | Customer concentration | Customer B |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of concentration risk | 28.40% | 13.70% | 17.50% |
Revenue | Customer concentration | Customer C |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of concentration risk |  |  | 12.70% |
Accounts receivables | Customer concentration | Customer A |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of concentration risk | 41.30% | 61.00% |  |
Accounts receivables | Customer concentration | Customer B |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of concentration risk | 10.20% | 15.30% |  |
Accounts receivables | Customer concentration | Customer D |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of concentration risk | 11.20% |  |  |
Accounts payable | Supplier concentration | Supplier A |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Percentage of concentration risk |  | 12.30% | 13.70% |

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