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Convertible bonds (Tables)
12 Months Ended
Dec. 31, 2016
Convertible bonds [Abstract]  
Schedule of convertible bonds
17.
Convertible bonds
 
 
 
December 31,
 
 
 
2015
 
2016
 
 
 
RMB
 
RMB
 
 
 
 
 
 
 
Convertible Bond, current
 
 
 
 
 
 
 
2019 Convertible Senior Notes
 
 
-
 
 
2,773,925
 
Less: issuance cost
 
 
-
 
 
(5,456)
 
 
 
 
-
 
 
2,768,469
 
 
 
 
 
 
 
 
 
Convertible Bond, non-current
 
 
 
 
 
 
 
2019 Convertible Senior Notes
 
 
2,597,403
 
 
-
 
Less: issuance cost
 
 
(25,284)
 
 
-
 
 
 
 
2,572,119
 
 
-