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Capital and reserves - Share capital and additional paid-in capital (Details)
12 Months Ended
Jul. 13, 2022
USD ($)
$ / shares
shares
Oct. 15, 2020
shares
Jun. 30, 2022
CNY (¥)
Vote
shares
Jun. 30, 2022
USD ($)
Vote
$ / shares
shares
Jun. 30, 2021
CNY (¥)
USD ($)
Jul. 11, 2022
$ / shares
Jun. 30, 2022
CNY (¥)
shares
Jun. 30, 2020
CNY (¥)
Jun. 30, 2020
USD ($)
Jan. 31, 2020
$ / shares
shares
Disclosure of classes of share capital [line items]                    
Number of ordinary shares issued             1,225,566,355     976,634,771
Ordinary shares, par value | $ / shares                   $ 0.00001
Ordinary shares outstanding                   865,591,398
Treasury shares             6,111,276     111,043,373
Aggregated par value of ordinary shares outstanding | ¥         ¥ 92,000   ¥ 92,000      
Number of shares authorized                   5,000,000,000
Class A ordinary shares member                    
Disclosure of classes of share capital [line items]                    
Number of ordinary shares issued             897,275,873      
Ordinary shares, par value | $ / shares $ 0.00001     $ 0.00001   $ 0.00001        
Aggregated par value of ordinary shares outstanding             ¥ 69,000 ¥ 69,000 $ 8,656,000  
Ordinary shares including treasury shares issued             766,011,125      
Number of votes | Vote     1 1            
Price per share | $ $ 13.80     $ 5.00            
Net proceeds received     ¥ 4,178,860,000 $ 625,274,000            
Number of restricted shares became vested | $       3,897,180 71,880,408          
Class A ordinary shares member | IPO                    
Disclosure of classes of share capital [line items]                    
Number of shares issued during the period 41,100,000   121,600,000 121,600,000            
Number of shares issued upon conversion of each preferred share   1                
Class A ordinary shares member | Over-allotment option                    
Disclosure of classes of share capital [line items]                    
Number of shares issued during the period 486,200   9,664,748 9,664,748            
Class B ordinary shares                    
Disclosure of classes of share capital [line items]                    
Number of ordinary shares issued             328,290,482      
Aggregated par value of ordinary shares outstanding | ¥             ¥ 23,000      
Ordinary shares including treasury shares issued             328,290,482      
Number of votes | Vote     3 3