Accounts receivable and allowance for credit losses (Details) |
Jun. 30, 2025
USD ($)
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Jun. 30, 2025
CNY (¥)
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Dec. 31, 2024
CNY (¥)
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| Credit Loss [Abstract] | |||
| Accounts receivable | $ 3,285,340 | ¥ 23,518,435 | ¥ 23,714,517 |
| Less: allowance for credit losses | |||
| Accounts receivable, net | $ 3,285,340 | ¥ 23,518,435 | ¥ 23,714,517 |
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- 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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- 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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- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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