INTERIM CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net cash provided by (used in) operating activities	$ 43,471,227	$ (6,680,813)
Cash flows from investing activities:
Purchase of property and equipment	(1,688)	(19,961)
Purchase of a non-marketable investment	(500,000)	0
Loan repayment from a third party	389,917	0
Net cash used in investing activities	(111,771)	(19,961)
Cash flows from financing activities:
Proceeds from stock option exercised	180,485	0
Proceeds from a private placement	5,000,000	0
Net cash provided by financing activities	5,180,485	0
Effect of exchange rate change on cash, cash equivalents and restricted cash	(281,110)	122,268
Net increase (decrease) in cash, cash equivalents and restricted cash	48,258,831	(6,578,506)
Cash, cash equivalents and restricted cash, beginning balance	13,842,745	21,829,154
Cash, cash equivalents and restricted cash, ending balance	62,101,576	15,250,648
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets
Cash and cash equivalents as of September 30, 2021 and 2020, respectively	8,859,865	4,934,049
Restricted cash as of September 30, 2021 and 2020, respectively	53,241,711	10,316,599
Total cash, cash equivalents, and restricted cash as of September 30, 2021 and 2020, respectively	62,101,576	15,250,648
Supplemental cash flows information:
Cash paid for interest	86,823	0
Cash paid for income tax	$ 112,429	$ 58,452