Accounts Receivable

6 Months Ended

Jun. 30, 2025

Accounts Receivable [Abstract]

ACCOUNTS RECEIVABLE

5. ACCOUNTS RECEIVABLE

Accounts receivable and the allowance for expected credit losses consisted of the following:

	As of December 31, 2024			As of June 30, 2025
	RMB			RMB			US$
				(Unaudited）
Accounts receivable		11,975			19,963			2,786
Less: allowance for expected credit losses		(1,601	)		(1,607	)		(224	)
		10,374			18,356			2,562

As of the year ended December 31, 2024 and the six months ended June 30, 2025, all accounts receivable were due from third-party customers. There were nil and RMB6(US$1) of allowance for expected credit losses recognized for the six months ended June 30, 2024 and 2025, respectively.

The movement of allowance of expected credit loss was as follows:

	December 31,  2024			As of June 30, 2025
	RMB			RMB			US$
				(Unaudited)
At the beginning of the year		(37	)		(1,601	)		(223	)
Additions		(1,564	)		(6	)		(1	)
At the end of the period		(1,601	)		(1,607	)		(224	)