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BANK LOANS - Short-term bank loans (Details) | Jun. 30, 2025 CNY (¥) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 CNY (¥)
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BANK LOANS |  |  |
Total short-term bank loans | ¥ 11,582,336 | $ 1,616,832 | ¥ 12,425,959
Bank of Kunlun |  |  |
BANK LOANS |  |  |
Total short-term bank loans |  |  | 843,487
Industry and Commercial Bank of China ("ICBC") |  |  |
BANK LOANS |  |  |
Total short-term bank loans | 10,000,000 | 1,395,946 | 10,000,000
China Construction Bank |  |  |
BANK LOANS |  |  |
Total short-term bank loans | 1,106,009 | 154,393 | 1,106,091
Industry and Commercial Bank of China ("ICBC") |  |  |
BANK LOANS |  |  |
Total short-term bank loans | ¥ 476,327 | $ 66,493 | ¥ 476,381

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