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Deferred income (Details) - CNY (¥)
Jun. 30, 2022
Jun. 30, 2021
Deferred Income    
Non-current portion ¥ 14,488,000 ¥ 20,005,000
Current portion 6,295,000 6,060,000
Deferred income ¥ 20,783,000 ¥ 26,065,000