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Related Party Transactions - Schedule of Amount Due From Related Party (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Related Party Transaction [Line Items]      
Total amounts due from related parties ¥ 35 $ 5
Guangzhou Tianlang Network Technology Co Ltd      
Related Party Transaction [Line Items]      
Total amounts due from related parties ¥ 35 $ 5