Property and equipment, net (Details) |
Jun. 30, 2026
USD ($)
|
Jun. 30, 2026
CNY (¥)
|
Dec. 31, 2025
CNY (¥)
|
|---|---|---|---|
| Property, Plant, and Equipment [Line Items] | |||
| Sub total | $ 199,227 | ¥ 1,356,913 | ¥ 1,377,361 |
| Less: accumulated depreciation | (187,952) | (1,280,124) | (1,250,199) |
| Total | 11,275 | 76,789 | 127,162 |
| Office Equipment [Member] | |||
| Property, Plant, and Equipment [Line Items] | |||
| Sub total | 20,448 | ||
| Furniture and Fixtures [Member] | |||
| Property, Plant, and Equipment [Line Items] | |||
| Sub total | 22,825 | 155,461 | 155,461 |
| Vehicles [Member] | |||
| Property, Plant, and Equipment [Line Items] | |||
| Sub total | $ 176,402 | ¥ 1,201,452 | ¥ 1,201,452 |
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- Definition Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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