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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2018
CNY (¥)
Other comprehensive income/(loss), tax   ¥ 0 ¥ 0
Foreign currency translation difference, tax   0 0
Research and development expenses      
Services rendered from related party $ 125,440 873,288 223,732
Online marketplace services      
Services rendered from related party $ 204,658 ¥ 1,424,786 ¥ 1,042,630