Other Non-Current Assets (Tables)

12 Months Ended

Dec. 31, 2025

Other Non-current Assets

Schedule of long-term time deposits and held-to-maturity debt securities by contractual maturity date


		As of December 31,
		2024		2025		2025
		RMB		RMB		US$

Due in 1 year through 2 years		40,641,146		49,741,549		7,112,947
Due in 2 years through 3 years		16,668,409		20,554,711		2,939,284
		57,309,555		70,296,260		10,052,231

Schedule of contractual maturity date of the investments


		As of December 31, 2024
				Gross		Gross		Fair Value
		Amortized		Unrealized		Unrealized		(Net Carrying
		Cost		Gains		Losses		Amount)
		RMB		RMB		RMB		RMB

Due in 1 year through 5 years		20,635,590		396,362		—		21,031,952
Due in 5 years through 10 years		2,607,675		215,569		—		2,823,244
		23,243,265		611,931		—		23,855,196


		As of December 31, 2025
								Fair Value		Fair Value
				Gross		Gross		(Net		(Net
		Amortized		Unrealized		Unrealized		Carrying		Carrying
		Cost		Gains		Losses		Amount)		Amount)
		RMB		RMB		RMB		RMB		US$

Due in 1 year through 5 years		29,229,334		137,680		(1,810)		29,365,204		4,199,168
Due in 5 years through 10 years		2,607,255		177,666		—		2,784,921		398,239
		31,836,589		315,346		(1,810)		32,150,125		4,597,407