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Short-Term Investments (Tables)

12 Months Ended

Dec. 31, 2017

Investments Schedule [Abstract]

Short-Term Investments

Short-term investments consisted of the following as of December 31, 2016 and 2017:

		December 31,
		2016				2017
		RMB				RMB				US$
Fixed rate time deposits			277,946				548,890				84,363

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Short Term Investments [Table Text Block]

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