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FAIR VALUE (Tables)

12 Months Ended

Feb. 28, 2022

Schedule of inputs for fair value measurements of assets


		Fair Value Measurement at Reporting Date Using
					Quoted Prices in			Significant Other			Significant
		February 28,			Active Market for			Observable			Unobservable
Description		2021			Identical Assets			Inputs			Inputs
					(Level 1)			(Level 2)			(Level 3)

Short-term investments
Variable-rate financial instruments		$	457,723			—		$	457,723			—
Available-for-sale investments		$	308,970			—		$	308,970			—
Long-term investments
Equity securities with readily determinable fair values		$	23,467		$	23,467			—			—
Fair value option investment		$	7,661			—			—		$	7,661
Available-for-sale investments		$	361,788			—			—		$	361,788

Total		$	1,159,609		$	23,467		$	766,693		$	369,449


		Fair Value Measurement at Reporting Date Using
					Quoted Prices in			Significant Other			Significant
		February 28,			Active Market for			Observable			Unobservable
Description		2022			Identical Assets			Inputs			Inputs
					(Level 1)			(Level 2)			(Level 3)

Short-term investments
Variable-rate financial instruments		$	150,000			—		$	150,000			—
Available-for-sale investments		$	340,183			—		$	340,183			—
Long-term investments
Equity securities with readily determinable fair values		$	16,723		$	14,606		$	2,117			—
Fair value option investment		$	17,735			—		$	17,419		$	316
Available-for-sale investments		$	134,033			—			—		$	134,033

Total		$	658,674		$	14,606		$	509,719		$	134,349

Schedule of roll forward of Level 3 instruments


		US$

Balance as of February 29, 2020		$	310,842
Purchase			20,349
Transfer in due to reclassification			22,579
Changes in fair value			19,145
Impairment loss			(10,029)
Foreign exchange difference			6,563

Balance as of February 28, 2021		$	369,449
Purchase			13,616
Disposal			(2,219)
Changes in fair value			(41,698)
Impairment loss			(204,807)
Foreign exchange difference			8

Balance as of February 28, 2022		$	134,349