OTHER RECEIVABLES

12 Months Ended

Dec. 31, 2023

Notes and other explanatory information [abstract]

OTHER RECEIVABLES

15. OTHER RECEIVABLES

	December 31,
	2022			2023		2023
	CNY			CNY		US$
Financial assets
Loans to an unrelated company (i)		83,600			—		—
Deposits		790			3		—
Others		1,000			—		—
Financials asset		85,390			3		—
Staff advance		237			12		3
Others		90			3		—
Total amount		327			15		3
Impairment allowance		(2,984	)		—		—
Total		82,733			18		3

(i) The balance as of December 31, 2022 consisted of a loan in the amount of CNY80,000 (US$11,599) and the corresponding interest receivable amounted to CNY 3,600 (US$521) from Shenzhen Qianhai, a subsidiary of the Company, to an unrelated company, Shenzhen Chaopeng Investment Co., Ltd. The loan was originally provided on June 30, 2021, and will mature in one year. On June 30, 2022, the loan was extended for another year to June 30, 2023. The loan is interest-bearing at a rate of 9% per annum and guaranteed by Shenzhen Feishang Investment Co., Limited, a company unrelated to the Group. During year 2023, the loan was derecognized as it was part of the wastewater treatment segment which was disposed by the Company (Note 3).

The movements in the loss allowance for other receivables during the years indicated are as follows:

	December 31,
	2022		2023			2023
	CNY		CNY			US$
Beginning of the year		239		2,984			423
Provision for expected credit losses, net		2,745		6,003			848
Disposal of PSTT		—		(8,987	)		(1,271	)
End of the year		2,984		—			—

For the financial assets included above, an impairment analysis is performed at each reporting date using the probability-of-default approach to measure ECL. The probability of default rates are estimated based on comparable companies with published credit ratings. The calculation reflects the probability weighted outcome, the time value of money and reasonable and supportable information that is available at the reporting date about past events, current conditions, and forward-looking credit risk information. As of December 31, 2023, the probability of default applied was nil, and the loss given default was nil. The loans to a unrelated company included in other receivables as part of the wastewater treatment business were disposed together by the Company on July 28, 2023 (Note 3), with the probability of default applied was 14.97% (5.51% as of December 31, 2022), and the loss given default was 64.90% (62.26% as of December 31, 2022).