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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Cash flows from operating activities:      
Net loss $ (79,971,847) $ (73,177,935) $ (42,397,279)
Adjustments to reconcile net loss to net cash used in operating activities:      
Depreciation and amortization 1,145,995 1,125,032 858,408
Net loss on disposal of property, equipment, software and operating lease right-of-use asset 6,811 18,973 327
Share-based compensation 10,520,282 18,679,658 10,129,541
Interest income on promissory notes   (9,946)  
Amortization of right-of use assets and interest of lease liabilities 303,535    
Foreign exchange loss (gain), net (2,555,325) 603,459 644,693
Changes in operating assets and liabilities:      
Accounts receivable, net 3,000,000 (3,000,000) 480,000
Prepayments and other current assets (881,402) (231,287) (2,337,011)
Amount due from related parties 3,887,238 (4,374,274) 1,300,790
Other non-current assets (40,297) (24,210) (13,292)
Accounts payable 344,509 1,511,640 1,097,261
Contract liabilities 9,607,276 4,774,464 (267,842)
Amount due to related parties 8,857,276 7,930,703 639,579
Accruals and other current liabilities (823,928) 1,057,491 1,243,150
Lease liabilities (280,465)    
Income tax payable (1,657,450) 1,657,450  
Deferred tax liabilities (44,163) 44,163  
Other non-current liabilities (29,732)   91,955
Net cash used in operating activities 48,611,687 43,414,619 28,529,720
Cash flows from investing activities:      
Withdrawal of short-term investments     8,000,000
Proceeds from disposal of property, equipment and software 4,892   7,930
Purchase of property, equipment and software (690,938) (2,509,926) (935,199)
Net cash generated from (used in) investing activities (686,046) (2,509,926) 7,072,731
Cash flows from financing activities:      
Proceeds from borrowings 25,830,030 4,386,860 6,083,650
Proceeds from share subscriptions   381,282  
Proceeds from exercise of share options 323,212 231,521 140,928
Proceeds from initial public offering, net of underwriting commissions   149,411,950  
Repayment of borrowings (4,353,588) (5,089,717) (1,063,670)
Payment of initial public offering costs   (1,595,088) (721,532)
Purchase of treasury shares under stock repurchase program (3,976,681) (2,361,576)  
Costs for retirement of treasury shares   (8,090)  
Net cash generated from financing activities 17,822,973 145,357,142 4,439,376
Effect of exchange rate on cash and cash equivalents 842,195 (192,352) (364,177)
Net increase (decrease) in cash and cash equivalents (30,632,565) 99,240,245 (17,381,790)
Cash and cash equivalents at the beginning of year 174,391,243 75,150,998 92,532,788
Cash and cash equivalents at the end of year 143,758,678 174,391,243 75,150,998
Supplemental cash flow disclosures:      
Interest paid 603,680 359,569 202,165
Income tax paid 2,433,241    
Cash paid for fixed operating lease costs included in the measurement of lease obligations in operating activities 313,929    
Right-of-use assets obtained in exchange for operating lease obligations 217,227    
Non-cash activities:      
Accretion of convertible redeemable preferred shares to redemption value   28,553 248,113
Conversion of preferred shares   154,477,960  
Payables for deferred initial public offering cost     $ 2,276,183
Retirement of treasury shares $ 4,596,282 1,741,971  
Surrender of ordinary shares for repayment of promissory notes   $ 6,800,856