Right of Use Assets (Tables)

12 Months Ended

Dec. 31, 2023

Right of Use Assets [Abstract]

Schedule of Supplemental Balance Sheet Information Related to Operating Leases

Supplemental balance sheet information related to operating leases was as follows:

	As of December 31,
	2022		2023		2023
	RMB		RMB		US$
Right-of-use assets, net		19,209		12,157		1,712
Operating lease liabilities - current		7,174		7,974		1,123
Operating lease liabilities - non-current		12,773		4,798		676
Total operating lease liabilities		19,947		12,772		1,799

Schedule of Weighted Average Remaining Lease Terms and Discount Rates for All of Operating Leases

The weighted average remaining lease terms and discount rates for all of operating leases were as follows as of December 31, 2023:

Remaining lease term and discount rate:
Weighted average remaining lease term (years)	1.83 years
Weighted average discount rate	4.75	%

Schedule of Maturities of Lease Liabilities

The following is a schedule of maturities of lease liabilities as of December 31, 2023:

Twelve months ending December 31,	RMB		US$
2024		8,360		1177
2025		4,210		593
2026		706		100
Total future minimum lease payments		13,276		1,870
Less: imputed interest		504		71
Present value of lease liabilities		12,772		1,799