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Property, Plant and Equipment, Net (Tables)
9 Months Ended
Mar. 31, 2023
Property, Plant and Equipment [Abstract]  
Schedule of property, equipment and leasehold improvement
   As of
June 30,
   As of
March 31,
 
   2022   2023 
Leasehold improvement  $433   $301,943 
Office and other equipment   146,798    146,791 
Furniture and fixture   
-
    193,563 
    147,231    642,297 
Less: accumulated depreciation   (33,206)   (54,084)
Total  $114,025   $588,213