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Accounts Receivable, Net
 12 Months Ended
Mar. 31, 2021
Receivables [Abstract]  
ACCOUNTS RECEIVABLE, NET
5.ACCOUNTS RECEIVABLE, NET

Accounts receivable, net is analyzed as follows:


   As of March 31, 
   2020   2021 
   $   $ 
Accounts receivable   2,008    973 
Less: expected credit loss provision   -    - 
    2,008    973 

Details of the movements of the expected credit loss provision are as follows:


   Year ended March 31, 
   2019   2020   2021 
   $   $   $ 
At beginning of year   -    -    - 
Provision for the year   -    -    - 
At end of year   -    -    -