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BUSINESS ACQUISITION AND INVESTMENT IN UNCONSOLIDATED ENTITY - Fair value of identified goodwill acquired and carrying value (Details) - Future Gas Station (Beijing) Technology, Ltd | 12 Months Ended |
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Jun. 30, 2025 CNY (¥) | Jun. 30, 2024 CNY (¥) | Jun. 30, 2023 CNY (¥) | Jun. 30, 2025 USD ($)
BUSINESS ACQUISITION AND INVESTMENT IN UNCONSOLIDATED ENTITY |  |  |  |
Goodwill | ¥ 6,996,895 | ¥ 6,996,895 |  | $ 976,729
Less: impairment | (6,996,895) | (6,996,895) |  | $ (976,729)
Impairment loss on goodwill | ¥ 0 | ¥ 0 | ¥ 4,730,002 |
Goodwill, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration] | Goodwill and Intangible Asset Impairment | Goodwill and Intangible Asset Impairment | Goodwill and Intangible Asset Impairment |

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