ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

12 Months Ended

Dec. 31, 2021

Accrued Liabilities And Other Liabilities [Abstract]

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

7. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

Accrued expenses and other current liabilities consisted of the following:

	As of December 31,
	2020		2021
	US$		US$
Accrued payroll and welfare		12,099,447		14,760,788
Income and non-income based taxes payables		4,936,372		7,156,828
Accrued marketing expenses		6,251,009		3,748,010
Accrued professional expenses		2,471,569		1,749,229
Advanced from customers		429,531		1,748,167
Accrued data and IT service expenses		622,641		1,443,897
Amounts due to employees for sale of their shares exercised under the share    incentive plan		—		1,131,614
Others		327,632		2,007,644
Total		27,138,201		33,746,177