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PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)
12 Months Ended
Dec. 31, 2020
PREPAID EXPENSES AND OTHER CURRENT ASSETS  
Summary of prepaid expenses and other assets

As of December 31,

2019

2020

    

US$

    

US$

IPO distribution service and promotional and advertisement service receivables

2,080,411

5,360,831

Input VAT receivables

1,626,213

1,174,934

Interest receivables from term deposits

1,526,625

429,454

Prepayment for long-term investment

854,891

Prepaid professional service fees

 

405,094

 

998,235

Prepaid data and IT service expenses

391,214

1,315,469

Advances to employees

286,900

825,682

Prepaid marketing expenses

 

222,167

 

402,724

Rental and other deposits

 

215,182

 

391,625

Others

 

411,495

 

315,476

 

8,020,192

 

11,214,430