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Additional Information of the Parent Company - Condensed Statements of Operations and Comprehensive Loss - Additional (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Condensed Statement of Income Captions [Line Items]      
Other comprehensive income (loss), tax ¥ 0 ¥ 0 ¥ 0
Parent company      
Condensed Statement of Income Captions [Line Items]      
Other comprehensive income (loss), tax ¥ 0