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CONSOLIDATED STATEMENTS OF CHANGES IN (DEFICIT) EQUITY (Parenthetical) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
CONSOLIDATED STATEMENTS OF CHANGES IN (DEFICIT) EQUITY      
Foreign currency translation adjustments, tax ¥ 0 ¥ 0 ¥ 0