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Goodwill (Tables)
6 Months Ended
Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of goodwill
     
  As of
June 30, 2022
  As of
December 31, 2021
     
Goodwill from Shanghai Qishuo acquisition(a)   1,912,102       2,009,769  

 

  (a) See Note 4 for details.