Leases - Summary of information related to operating lease payments (Details) |
12 Months Ended | ||
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Dec. 31, 2025
CNY (¥)
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Dec. 31, 2024
CNY (¥)
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Dec. 31, 2025
USD ($)
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| Operating lease: | |||
| Operating leases right-of-use assets | ¥ 7,900,307 | ¥ 15,816,035 | $ 1,129,729 |
| Current portion of lease liabilities | 6,702,853 | 11,457,877 | 958,495 |
| Non-current portion of lease liabilities | 1,306,423 | 4,222,724 | $ 186,816 |
| Total operating lease liabilities | ¥ 8,009,276 | ¥ 15,680,601 | |
| Weighted-average remaining lease term (in years) - operating leases | 1 year 2 months 15 days | 1 year 4 months 9 days | 1 year 2 months 15 days |
| Weighted-average discount rate - operating leases | 3.59% | 4.51% | 3.59% |
| Cash paid for operating leases | ¥ 10,831,900 | ¥ 13,667,004 | |
| Lease liabilities arising from obtaining right-of-use assets | ¥ 5,784,701 | ¥ 18,512,505 | |
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- References No definition available.
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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