FAIR VALUE MEASUREMENT (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Summary of assets measured at fair value on a recurring basis

As of December 31, 2021 and 2022, short-term investments measured at fair value are as follows:

	Fair value measurement as of December 31, 2022
	Quoted prices in active market for identical assets		Significant other observable inputs		Significant unobservable inputs		Total
	(Level 1)		(Level 2)		(Level 3)
	RMB		RMB		RMB		RMB
Short-term investments:
Available-for-sale debt investments
- Wealth management products		—		1,512,953		—		1,512,953
Investments elected to measure at fair value
- Wealth management products		—		1,203,995		—		1,203,995
Total		—		2,716,948		—		2,716,948

11. FAIR VALUE MEASUREMENT - continued

Measured at fair value on a recurring basis - continued

	Fair value measurement as of December 31, 2021
	Quoted prices in active market for identical assets		Significant other observable inputs		Significant unobservable inputs		Total
	(Level 1)		(Level 2)		(Level 3)
	RMB		RMB		RMB		RMB
Short-term investments:
Available-for-sale debt investments
- Wealth management products		—		2,199,372		—		2,199,372
Total		—		2,199,372		—		2,199,372

Summary of trading securities and available-for-sale investments

A summary of available-for-sale investments during the years ended December 31, 2021 and 2022 is presented as below:

	As of December 31, 2022
	Original cost		Unrealized gains		Unrealized loss		Provision for decline in value		Fair value
	RMB		RMB		RMB		RMB		RMB
Short-term investments:
Available-for-sale debt investments
- Wealth management products		1,508,635		4,318		—		—		1,512,953
Total		1,508,635		4,318		—		—		1,512,953

11. FAIR VALUE MEASUREMENT - continued

Measured at fair value on a recurring basis - continued

	As of December 31, 2021
	Original cost		Unrealized gains		Unrealized loss		Provision for decline in value		Fair value
	RMB		RMB		RMB		RMB		RMB
Short-term investments:
Available-for-sale debt investments
- Wealth management products		2,203,630		—		4,258		—		2,199,372
Total		2,203,630		—		4,258		—		2,199,372