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Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2020
Disclosure Text Block Supplement [Abstract]  
Schedule of Other current assets
    December 31,
2020
    December 31,
2019
 
Deferred offering costs (i)   $ -     $ 461,710  
Prepaid advertising expense (ii)     1,033,280       426,901  
Deferred contract costs (iii)     272,804       189,572  
Office rental deposit     86,287       71,752  
Interest receivable     32,416       72,671  
Prepaid rental fees     15,827       15,598  
Prepaid consulting service fees     78,627       3,160  
Others     94,167         16,676  
    $ 1,613,408     $ 1,258,040  
(i) As of December 31, 2019, the balance of deferred offering costs represented the expenses directly related to the initial public offerings, which was deducted against additional paid-in capital upon initial public offering in February 2020.
   
(ii) As of December 31, 2020 and 2019, the balance of prepaid advertising expenses represents payments of advertising expenses to three and one vendors respectively. Among the balance of $1,033,280 as of December 31, 2020, $459,235 was subsequently refunded from the vendor to the Company as the Company suspended cooperation with the vendor.
   
(iii) As of December 31, 2020 and 2019, the balances of deferred contract costs represented the travel and media expenses which were directly related to certain contracts with customers. The costs and expenses were incurred so as the Company would fulfil its performance obligation committed to its customers and were expected to be recovered.