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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounts receivable and allowance for uncollectible accounts and Loans receivable (Details) - USD ($)
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Guarantor Obligations [Line Items]      
Allowance for uncollectible accounts receivable $ 70,138 $ 67,864  
Allowance for uncollectible loan receivable 46,115,732 39,172,141 $ 15,017,029
Total amount of new loans issued $ 0 $ 0 $ 74,003
Minimum      
Guarantor Obligations [Line Items]      
Terms of loans (in months)   12 months  
Interest rate (in percentage)   6.00%  
Maximum      
Guarantor Obligations [Line Items]      
Terms of loans (in months)   36 months  
Interest rate (in percentage)   8.00%