XML 52 R32.htm IDEA: XBRL DOCUMENT v3.19.1
Accounts receivable, net (Tables)
12 Months Ended
Dec. 31, 2018
Accounts Receivable, Net [Abstract]  
Schedule of accounts receivable
  December 31, 2017  December 31, 2018 
  RMB  RMB 
Accounts receivable, gross:  8,885   52,746 
Less: allowance for doubtful accounts  (418)  (491)
Accounts receivable, net  8,467   52,255 
Schedule of allowance for doubtful accounts
  December 31, 2016  December 31, 2017  December 31, 2018 
   RMB   RMB   RMB 
Balance at the beginning of the period  -   -   418 
Additions charged to bad debt expense  -   418   491 
Write-off of bad debt allowance  -   -   (418)
Balance at the end of the period  -   418   491