Segment reporting - Consolidated total assets (Details) |
Jun. 30, 2026
CNY (¥)
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Jun. 30, 2026
USD ($)
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Dec. 31, 2025
CNY (¥)
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Jun. 30, 2025
CNY (¥)
|
|---|---|---|---|---|
| Segment reporting | ||||
| Goodwill | ¥ 26,550,297 | $ 3,913,030 | ¥ 26,550,297 | |
| Current assets | 95,881,631 | 14,131,204 | 87,901,364 | |
| TOTAL ASSETS | 235,715,086 | 34,740,106 | ¥ 143,950,765 | ¥ 85,237,144 |
| Operating Segment | ||||
| Segment reporting | ||||
| Long-Lived Assets | 113,283,158 | 16,695,872 | 19,524,399 | |
| Goodwill | 26,550,297 | 3,913,030 | 26,550,297 | |
| Current assets | 43,281,771 | 6,378,944 | 36,817,635 | |
| Corporate Non Segment | ||||
| Segment reporting | ||||
| Current assets | 52,599,860 | $ 7,752,260 | 2,344,813 | |
| Adult education supporting services | Operating Segment | ||||
| Segment reporting | ||||
| Long-Lived Assets | 6,685,101 | 7,600,769 | ||
| Goodwill | 4,152,740 | 13,318,789 | ||
| Current assets | 11,436,157 | 25,425,006 | ||
| Safety technology training services | Operating Segment | ||||
| Segment reporting | ||||
| Long-Lived Assets | 77,828,875 | 442,498 | ||
| Goodwill | 13,923,883 | 5,587,375 | ||
| Current assets | 6,533,609 | 11,392,629 | ||
| Online course services | Operating Segment | ||||
| Segment reporting | ||||
| Long-Lived Assets | 28,769,182 | 11,481,132 | ||
| Goodwill | 7,693,654 | ¥ 7,644,133 | ||
| Current assets | 25,070,945 | |||
| Customized equipment sales | Operating Segment | ||||
| Segment reporting | ||||
| Goodwill | 780,020 | |||
| Current assets | ¥ 241,060 |
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of asset recognized for present right to economic benefit, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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