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Taxes (Tables)
3 Months Ended
Oct. 31, 2022
Income Tax Disclosure [Abstract]  
Schedule of deferred tax assets
  

October 31,

2022

  

July 31,

2022

 
   (unaudited)     
Deferred tax assets:        
Allowance for doubtful account  $
-
   $105,059 
Net operating loss carry forwards   487,147    1,563,354 
Deferred tax assets before valuation allowance   487,147    1,668,413 
Less: valuation allowance   (487,147)   (1,668,413)
Net deferred tax assets  $
-
   $
-