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Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jan. 31, 2023
Accounting Policies [Abstract]  
Schedule of currency exchange rates
   January 31,
2022
 
Foreign currency  Period-end
spot rate
   Average rate 
RMB: 1USD   0.1572    0.1560 
HKD: 1USD   0.1282    0.1282