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INCOME TAXES - Components of the income tax expenses (Details) - USD ($)
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
INCOME TAXES      
Current $ 131,433 $ 482,976 $ 446,769
Deferred     43,186
Total $ 131,433 $ 482,976 $ 489,955