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Intangible Asset (Details) - 12 months ended Dec. 31, 2018
¥ in Thousands, $ in Thousands
USD ($)
CNY (¥)
Intangible Asset    
Addition   ¥ 2,852,370
Amortization $ (71,423) (491,069)
Foreign currency translation difference   218,037
Intangible asset, ending balance   2,579,338
Impairment charges   ¥ 0