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Investments (Tables)
 12 Months Ended
Jun. 30, 2021
Investments [Abstract]  
Schedule of investment balances
   As of June 30, 
   2020   2021   2021 
   RMB   RMB   US$ 
Short-term investments                    
- Private equity funds product-A   2,000    
-
    
-
 
- Private equity funds product-B   2,000    
-
    
-
 
Total short-term investments   4,000    
-
    
-