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Leases - Schedule of Operating Lease Related Assets and Liabilities (Details)	6 Months Ended
	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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Right-of-use assets obtained in exchange for operating lease liabilities

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Present value of lessee's discounted obligation for lease payments from operating lease.

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-Topic 842
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-Section 45
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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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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.

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