Other operating income, net (Tables)

6 Months Ended

Jun. 30, 2021

Other operating income, net

Schedule of other operating income (loss), net

	For the six months ended June 30,
	2020	2021
	US$	US$
Government subsidies	1,019,411	2,015,207
Contingent losses	(445,684)	—
Others	262,512	246,647
Total	836,239	2,261,854