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Share-based Compensation - Share-based compensation expense (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Share-based Compensation        
Total ¥ 29,233 $ 4,238 ¥ 37,359 ¥ 50,741
Cost of revenues        
Share-based Compensation        
Total 7,052 1,022 11,484 14,789
Selling and marketing expenses        
Share-based Compensation        
Total 2,259 328 3,431 2,370
General and administrative expenses        
Share-based Compensation        
Total 9,659 1,400 12,496 16,128
Research and development expenses        
Share-based Compensation        
Total ¥ 10,263 $ 1,488 ¥ 9,948 ¥ 17,454