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Commitments and Contingencies (Tables)
9 Months Ended
Feb. 28, 2018
Commitments and Contingencies Disclosure [Abstract]  
Schedule of future minimum rental payments required under operating lease

   Total   1 Year   2-3 Year   Thereafter 
Operating lease  $142,917   $20,988   $121,929   $           - 
Total  $142,917   $20,988   $121,929   $-