v3.22.2.2
Organization and Reorganization - Additional information (Details)
¥ in Thousands, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2022
CNY (¥)
Jun. 30, 2022
USD ($)
Jun. 30, 2021
CNY (¥)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Jun. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Subsidiary, Sale of Stock [Line Items]              
Variable interest entity registered capital ¥ 40,100     ¥ 40,100      
Incurred recurring operating losses including net losses 56,200     101,900 ¥ 163,500    
Net cash used in operating activities (55,372) $ (8,268) ¥ (40,260) (92,300) (88,900)    
Accumulated deficit (1,039,811)     (983,645)   $ (155,240)  
Cash and cash equivalents ¥ 32,200   ¥ 126,150 ¥ 63,461 ¥ 109,916 $ 4,805 $ 9,474