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Intangible assets, net (Schedule of Estimated Amortization Expenses) (Details)
¥ in Thousands
Dec. 31, 2016
CNY (¥)
Amortization expense of intangible assets  
2017 ¥ 25,606
2018 10,453
2019 6,032
2020 4,708
2021 ¥ 1,925