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CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Parenthetical)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Dec. 31, 2016
CNY (¥)
CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME      
Inventory write-down ¥ 440,823 ¥ 206,733 ¥ 303,233
Shipping and handling expenses 312,016 4,498,678 3,830,229
Tax on share of loss of equity method investees 0    
Tax on Foreign currency translation 0 ¥ 0 ¥ 0
Tax on Fair value change of available-for-sale investments ¥ 0