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Land Use Rights (Tables)
12 Months Ended
Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of land use rights

   As of
March 31,
   As of
March 31,
 
   2020   2019 
Land use rights, cost  $811,194   $853,552 
Less: accumulated amortization   (91,472)   (79,178)
Land use rights, net  $719,722   $774,374 

Schedule of estimated future amortization expense

Years ending March 31,  Amortization
expense
 
     
2021  $16,502 
2022   16,502 
2023   16,502 
2024   16,502 
2025   16,502 
Thereafter   637,212 
   $719,722