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Investment in equity method investees (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2018 CNY (¥)	Nov. 30, 2018 CNY (¥)	May 31, 2018 CNY (¥)	Feb. 28, 2014 USD ($)	Feb. 28, 2014 CNY (¥)
Investment in equity method investees
Investment in equity method investees	$ 97,073		¥ 66,334		¥ 667,427
Share of loss of equity method investees	$ 6,836	¥ 46,999	22,280	¥ 71,489
Impairment loss for investment in affiliate		¥ 0	0	¥ 0
Kunshan Baowei Information Technology Limited
Investment in equity method investees
Investment in equity method investees					271,959
Equity method ownership interest percentage						45.00%
Consideration for equity method investment						¥ 272,000
Shenzhen Tencent Puhe Limited Partnership
Investment in equity method investees
Investment in equity method investees					293,481
Equity method ownership interest percentage							14.00%
Consideration for equity method investment							¥ 362,500
Ovation
Investment in equity method investees
Investment in equity method investees			46,630		48,292
Equity method ownership interest percentage								23.00%	23.00%
Consideration for equity method investment								$ 55,777	¥ 339,303
Other
Investment in equity method investees
Investment in equity method investees			¥ 19,704		¥ 53,695

X

- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

+ References

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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