XML 140 R131.htm IDEA: XBRL DOCUMENT v3.22.1
SUBSEQUENT EVENTS - Plan to the employees (Details) - USD ($)
6 Months Ended 12 Months Ended
Feb. 28, 2022
Dec. 31, 2021
Jun. 30, 2020
Subsequent Event [Line Items]      
Stock Options, Shares, Granted   0 0
Subsequent event | Class A ordinary shares      
Subsequent Event [Line Items]      
Stock Options, Shares, Granted 1,642,331    
Fair value of shares granted $ 1,708,024    
Vesting period 3 years