Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Significant Accounting Policies - Statutory reserves (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Significant Accounting Policies
Appropriations to general reserve funds and statutory surplus funds	¥ 3,893	¥ 8,576	¥ 11,552
Minimum
Significant Accounting Policies
After tax profit to be transferred to statutory surplus fund (as a percent)	10.00%
After tax profit to be transferred to general reserve fund (as a percent)	10.00%
Maximum
Significant Accounting Policies
Limit of surplus fund as a percentage of registered capital, beyond which no further appropriation is required	50.00%
Limit of general reserve fund as a percentage of registered capital, beyond which no further appropriation is required	50.00%