Summary of Significant Accounting Policies - Schedule of Net Revenues (Details)	12 Months Ended
Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)
Schedule of Net Revenues [Line Items]
Net revenues	¥ 27,006,744	$ 3,842,298	¥ 40,595,916	¥ 78,335,376
Product sales revenue [Member]
Schedule of Net Revenues [Line Items]
Net revenues	26,633,026		34,096,450	71,321,462
Service revenue [Member]
Schedule of Net Revenues [Line Items]
Net revenues	¥ 373,718		¥ 6,499,466	¥ 7,013,914

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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