OTHER RECEIVABLES (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2024

Dec. 31, 2023

Notes and other explanatory information [abstract]

Schedule of other receivables

	December 31,		June 30,
	2023		2024		2024
	CNY		CNY		US$
	(Audited)		(Unaudited)		(Unaudited)
Financial assets:
Deposits		3		3		—
Financials asset		3		3		—
Staff advance		12		12		2
Others		3		6		1
Total amount		15		18		3
Total		18		21		3

	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).

Schedule of movements in the loss allowance for other receivables

	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		—			—