Summary of Significant Accounting Policies - Barter Transaction (Details) - Barter Transactions - CNY (¥) ¥ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Summary of Significant Accounting Policies
Revenues	¥ 0	¥ 551	¥ 3,411
Expenses	¥ 0	¥ 1,269	¥ 4,516

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