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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥)
Share-based compensation	$ 136,193	¥ 948,148	¥ 648,025	¥ 257,661
Cost of revenues
Share-based compensation	11,671	81,254	74,339	42,759
Research and development expenses
Share-based compensation	72,639	505,697	225,173	122,348
Sales and marketing expenses
Share-based compensation	1,827	12,718	5,723	4,417
General and administrative expenses
Share-based compensation	$ 50,056	¥ 348,479	¥ 342,790	¥ 88,137
Class A common shares
Number of common shares represented by each ADS	20	20	20	20

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- Definition

The number of underlying shares represented by one American Depository Receipt (ADR) or Global Depository Receipt (GDR). A value of '3' means that one ADR represents 3 underlying shares. If one underlying share represents 2 ADR's then the value would be represented as '0.5'.

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- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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