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Cash and cash equivalents (Tables) | 12 Months Ended
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Dec. 31, 2016
Cash and cash equivalents [Abstract] |
Schedule of cash and cash equivalents balance |
|  | 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 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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