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Deferred Revenue and Customer Deposits (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Revenue Recognition and Deferred Revenue [Abstract]          
Deferred revenue ¥ 88,478 $ 12,828 ¥ 80,405    
Customer deposits 50,326 7,297 39,586 $ 5,739 ¥ 38,041
Total deferred revenue and customer deposits - current 138,804 20,125 119,991    
Deferred revenue - non-current ¥ 3,585 $ 520 ¥ 3,845