CONVERTIBLE BOND PAYABLE (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Summary of Convertible Bonds Payable

	As of December 31,
	2021		2022
	US$		US$
2021 Series A1 Note US$ 44,000,000 1.00% due to 2026		37,148,318		41,531,679
2021 Series A2 Note US$ 21,000,000 1.00% due to 2026		21,120,487		21,330,823
2021 Series B Note US$ 90,000,000 1.00% due to 2026		90,572,871		91,474,981
		148,841,676		154,337,483