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Leases - Schedule of Operating Lease Related Assets and Liabilities (Details) | 6 Months Ended |  |
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Jun. 30, 2025 CNY (¥) | Jun. 30, 2024 CNY (¥) | Jun. 30, 2025 USD ($) | Dec. 31, 2024 CNY (¥)
Schedule of Operating Lease Related Assets and Liabilities and Other Information Related to Leases [Abstract] |  |  |  |
Right of use assets | ¥ 1,170,419 |  | $ 163,384 | ¥ 1,637,903
Operating lease liabilities, current | 875,003 |  | 122,146 | 902,610
Operating lease liabilities, noncurrent | 231,198 |  | $ 32,274 | 688,333
Total operating lease liabilities | 1,106,201 |  |  | ¥ 1,590,942
Operating cash payments for operating leases | 1,327,231 | ¥ 1,792,253 |  |
Right-of-use assets obtained in exchange for operating lease liabilities |  | ¥ 5,817,299 |  |
Weighted average remaining lease term (years) | 1 year 4 months 9 days | 1 year 10 months 9 days | 1 year 4 months 9 days |
Weighted average discount rate | 3.10% | 3.10% | 3.10% |

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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