XML 92 R64.htm IDEA: XBRL DOCUMENT v3.22.1
Prepaid Expenses and Other Current Assets (Details) - Schedule of analysis of the allowance for doubtful accounts
¥ in Thousands
12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
CNY (¥)
Schedule of analysis of the allowance for doubtful accounts [Abstract]        
Balance, beginning of year
Additions 20
Write off (20)
Balance, end of year