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Cash and cash equivalents
12 Months Ended
Dec. 31, 2016
Cash and cash equivalents [Abstract]  
Cash and cash equivalents
5.
Cash and cash equivalents
 
Cash and cash equivalents represent cash on hand and demand deposits placed with banks or other financial institutions. Cash and cash equivalents balance as of December 31, 2015 and 2016 primarily consist of the following currencies: 
 
 
 
December 31, 2015
 
December 31, 2016
 
 
 
 
 
RMB
 
 
 
RMB
 
 
 
Amount
 
equivalent
 
Amount
 
equivalent
 
 
 
 
 
 
 
 
 
 
 
RMB
 
 
450,802
 
 
450,802
 
 
1,536,947
 
 
1,536,947
 
US$
 
 
73,632
 
 
478,132
 
 
6,171
 
 
42,796
 
Total
 
 
 
 
 
928,934
 
 
 
 
 
1,579,743