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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+ Details

Summary of Significant Accounting Policies - Schedule of Net Revenues By Geographical Location of Customers (Details)	12 Months Ended
	Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)
Schedule of Net Revenues By Geographical Location of Customers [Line Items]
Net revenues	¥ 27,006,744	$ 3,842,298	¥ 40,595,916	¥ 78,335,376
PRC [Member]
Schedule of Net Revenues By Geographical Location of Customers [Line Items]
Net revenues	23,675,156		24,986,453	57,485,526
Hong Kong [Member]
Schedule of Net Revenues By Geographical Location of Customers [Line Items]
Net revenues	1,242,153		9,467,603	16,461
Singapore [Member]
Schedule of Net Revenues By Geographical Location of Customers [Line Items]
Net revenues			4,697,243	1,119,872
The United States [Member]
Schedule of Net Revenues By Geographical Location of Customers [Line Items]
Net revenues	1,560,205		1,094,904	7,115,353
Others [Member]
Schedule of Net Revenues By Geographical Location of Customers [Line Items]
Net revenues	¥ 529,230		¥ 349,713	¥ 12,598,164