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INCOME TAX - Reconciliation of income tax expense (benefit) (Details) | 12 Months Ended
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Jun. 30, 2025 CNY (¥) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 CNY (¥) | Jun. 30, 2023 CNY (¥)
INCOME TAX |  |  |  |
Income tax benefits calculated at PRC statutory rates | ¥ (10,924,924) | $ (1,525,061) | ¥ (12,858,953) | ¥ (15,364,513)
Nondeductible expenses and others | 410,819 | 57,348 | 427,969 | 539,247
Effect of tax rate differential | 8,080,498 | 1,127,995 | 9,080,982 | 7,949,048
Benefit of revenue exempted from enterprise income tax | 12,864 | 1,796 | 19,714 | (18,814)
Change in valuation allowances | 2,422,323 | 338,143 | 3,330,318 | 6,913,371
Income tax expenses (benefit) | ¥ 1,580 | $ 221 | ¥ 30 | ¥ 18,339

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