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Other Non-Current Assets (Tables) | 12 Months Ended
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Dec. 31, 2016
Other Non-Current Assets [Abstract] |
Summary of other non-current assets |
|  | As of December 31, |
|  | 2015 |  | 2016 |  | 2016 |
|  | RMB |  | RMB |  | US$ |
Rental deposits |  | 7,517 |  | 7,599 |  | 1,094 |
Non-current portion of prepayments to suppliers and other business related expenses |  | 10,229 |  | 8,448 |  | 1,217 |
Total |  | 17,746 |  | 16,047 |  | 2,311 |

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- Definition Tabular disclosure of noncurrent assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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