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Borrowings - Principal maturities of the long-term borrowings (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
2025	¥ 85,728	¥ 5,542
2026	85,728	5,542
2027	111,926	7,388
2028 and after	2,516
Total	¥ 285,898	¥ 18,472

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date of fourth year (rolling approach).

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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