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Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of share-based compensation expense by function

Total share-based compensation expenses recorded by the Group are as follows:

		Years ended December 31,
		2015				2016				2017
		RMB				RMB				RMB				US$
Cost of revenues			1,523				1,490				762				117
Research and development			142,777				148,211				20,691				3,180
Selling and marketing			18,206				13,830				39				6
General and administrative			153,234				142,618				51,824				7,965
			315,740				306,149				73,316				11,268

2014 Restricted Share Plan

Restricted shares activity

		Number of shares				Weighted Average Exercise Price (US$)				Weighted Average Grant Date Fair Value (US$)				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value (US$)
Outstanding at January 1, 2017			50,865,930				0.31				1.37				7.31				32,839
Granted			13,848,890				0.34				0.78
Forfeited			(26,612,224	)			0.31				1.20
Exercised			(8,277,510	)			0.28				1.50
Outstanding at December 31, 2017			29,825,086				0.33				1.22				6.31				26,064
Vested and expected to vest at December 31, 2017			29,825,086
Exercisable as at December 31, 2017			4,109,262

2013 Incentive Scheme

Restricted shares activity

The following table summarizes the Group’s restricted shares with an option feature activity under the 2013 Incentive Scheme during the year ended December 31, 2017:

		Number of shares				Weighted Average Exercise Price (US$)				Weighted Average Grant Date Fair Value (US$)				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value (US$)
Outstanding at January 1, 2017			48,967,051				0.33				1.22				7.01				30,438
Granted			3,468,360				0.34				0.60
Forfeited			(5,009,400	)			0.34				1.27
Exercised			(5,131,110	)			0.33				1.30
Outstanding at December 31, 2017			42,294,901				0.33				1.15				6.01				36,941
Vested and expected to vest at December 31, 2017			42,294,901
Exercisable as at December 31, 2017			20,073,089

2011 Share Award Scheme

Restricted shares activity

The following table summarizes the restricted shares activity pursuant to the 2011 Share Award Scheme for the year ended December 31, 2017:

		Number of ordinary shares				Weighted average grant date fair value (US$)
Unvested at January 1, 2017			7,007,672				1.30
Granted			484,000				0.91
Vested			(3,128,262	)			1.23
Forfeited			(916,910	)			1.23
Unvested at December 31, 2017			3,446,500				1.32

Other Share Incentive Awards

Restricted shares activity

The following table summarizes the restricted shares activity pursuant to the Other Share Incentive Awards for the year ended December 31, 2017:

		Number of ordinary shares				Weighted average grant date fair value (US$)
Unvested at January 1, 2017			1,992,651				1.08
Vested			(1,264,554	)			0.99
Forfeited			(154,062	)			1.83
Unvested at December 31, 2017			574,035				1.21

Restricted shares with an option feature | 2014 Restricted Share Plan

Summary of assumptions used in calculating fair value of options

The grant date fair value of each restricted share with an option feature is estimated on the date of grant using the binomial tree option pricing model with the following assumptions used for grants in 2017:

		Year ended December 31, 2017
Fair value of ordinary share (US$)			0.84~1.21
Risk-free interest rates			2.81%~2.99	%
Expected volatility range			55.9%~58.0	%
Expected dividend yield			0	%
Expected exercise multiple			2.2
Fair value per option granted (US$)			0.55~0.93

Restricted shares with an option feature | 2013 Incentive Scheme

Summary of assumptions used in calculating fair value of options

The grant date fair value of each restricted share with an option feature is estimated on the date of grant using the binomial tree option pricing model with the following assumptions used for grants in 2017:

		Year ended December 31, 2017
Fair value of ordinary share (US$)			0.84~1.21
Risk-free interest rates			2.78%~2.99	%
Expected volatility range			56.1%~57.5	%
Expected dividend yield			0	%
Expected exercise multiple			2.2
Fair value per option granted (US$)			0.53~0.88

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- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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