Lease (Tables)

12 Months Ended

Dec. 31, 2022

Lessee Disclosure [Abstract]

Schedule of balances reported in the consolidated balance sheets related to the Group's leases

The following table presents balances reported in the consolidated balance sheets related to the Group’s leases:

	For the years ended December 31,
	2021		2022
	US$		US$
Operating lease right-of-use assets		6,613,520		13,960,092
Operating lease liabilities		5,702,954		13,880,156

Schedule of operating lease expenses and short-term lease expenses

The following table presents operating lease expenses and short-term lease expenses reported in the consolidated statements of comprehensive income (loss) related to the Group’s leases:

	For the years ended December 31,
	2021		2022
	US$		US$
Operating lease expenses		3,881,251		5,608,890
Short-term lease expenses		257,150		358,223

Summary of supplemental information related to operating leases

A summary of supplemental information related to operating leases as of December 31, 2022 is as follows:

	For the years ended December 31,
	2021		2022
	US$		US$
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used in operating leases		5,058,078		5,801,369
Non-cash right-of-use assets in exchange for new lease obligations:
Operating leases		4,058,759		12,918,892
Weighted average remaining lease term:
Operating leases	4 years		4 years
Weighted average discount rate:
Operating leases	5.5%		5.4%

Summary of maturity analysis of the annual undiscounted cash flows

The following is a maturity analysis of the annual undiscounted cash flows for the annual periods ended December 31:

	2022
	US$
Years ending December 31:
2023		6,065,338
2024		4,167,060
2025		1,863,865
2026		1,679,476
2027		1,080,461
2028 and after		328,965
Total undiscounted operating lease payments		15,185,165
Less: imputed interest		1,305,009
Present value of operating lease liabilities		13,880,156