INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2023

Intangible Assets

INTANGIBLE ASSETS

10. INTANGIBLE ASSETS

	Patent			Concession right			Software			Total
		CNY			CNY			CNY			CNY
Cost
As of January 1, 2022		22,878			20,430			274			43,582
Additions		—			—			5			5
As of December 31, 2022		22,878			20,430			279			43,587
Accumulated amortization and impairment
As of January 1, 2022		(22,493	)		(730	)		(170	)		(23,393	)
Amortization charge		(36	)		(730	)		(47	)		(813	)
As of December 31, 2022		(22,529	)		(1,460	)		(217	)		(24,206	)
Net carrying amount
As of December 31, 2022		349			18,970			62			19,381
As of December 31, 2022 (US$)		51			2,750			9			2,810
Cost
As of January 1, 2023		22,878			20,430			279			43,587
Additions		—			—			—			—
Disposal of PSTT		(22,878	)		(20,430	)		(279	)		(43,587	)
As of December 31, 2023		—			—			—			—
Accumulated amortization and impairment
As of January 1, 2023		(22,529	)		(1,460	)		(217	)		(24,206	)
Amortization charge		(18	)		(425	)		(17	)		(460	)
Disposal of PSTT		22,547			1,885			234			24,666
As of December 31, 2023		—			—			—			—
Net carrying amount
As of December 31, 2023		—			—			—			—
As of December 31, 2023 (US$)		—			—			—			—

There was no impairment loss on intangible assets for the years ended December 31, 2021, 2022 and 2023.