Accounts receivable, net (Details) |
Jun. 30, 2026
USD ($)
|
Jun. 30, 2026
CNY (¥)
|
Dec. 31, 2025
CNY (¥)
|
|---|---|---|---|
| Credit Loss [Abstract] | |||
| Accounts receivable | $ 3,079,630 | ¥ 20,975,050 | ¥ 27,669,404 |
| Less: allowance for credit loss | (467,358) | (3,183,129) | (5,513,270) |
| Accounts receivable, net | $ 2,612,272 | ¥ 17,791,921 | ¥ 22,156,134 |
| X | ||||||||||
- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References No definition available.
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