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Other Assets (Tables)
12 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of other assets
   As of
March 31,
   As of
March 31,
 
   2021   2020 
Prepayments for advertising or marketing  $4,909,840   $6,200,104 
Prepayment of celebrity endorsement fee   228,265    296,397 
Total  $5,138,105   $6,496,501