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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Jul. 31, 2020
Jul. 31, 2019
Feb. 28, 2019
Feb. 27, 2019
Nov. 02, 2018
Aug. 21, 2018
Jan. 05, 2015
CONSOLIDATED BALANCE SHEETS              
Ordinary shares, Par value $ 0.001 $ 0.001 $ 0.001   $ 0.001 $ 0.001 $ 0.0004
Ordinary shares, Authorized 1,000,000,000 1,000,000,000       100,000,000,000 100,000,000
Ordinary shares, Issued 47,014,674 37,074,672          
Ordinary shares, Outstanding 47,014,674 37,074,672 35,000,000 50,000,000