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Inventories - Inventory (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2023
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Inventory Disclosure [Abstract]      
Raw materials   ¥ 90,882 ¥ 65,575
Work-in-process   11,003 2,999
Finished goods   58,896 113,998
Total $ 22,646 ¥ 160,781 ¥ 182,572