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LEASES - Operating lease related assets and liabilities (Details)
Jun. 30, 2025
CNY (¥)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
CNY (¥)
Operating lease related assets and liabilities recorded on the balance sheets      
Operating lease right-of-use assets, net ¥ 18,975,692 $ 2,648,904 ¥ 23,547,193
Operating lease liabilities - current 1,761,231 245,858 3,741,247
Operating lease liabilities - non-current 1,081,827 151,017 3,971,285
Total operating lease liabilities ¥ 2,843,058 $ 396,875 ¥ 7,712,532