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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Parenthetical) - CNY (¥)
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Consolidated Statements of Operations and Comprehensive Income/(Loss)    
Unrealized gains/(losses), tax ¥ 0 ¥ 0
Reclassification adjustment for (gains)/losses recorded in net income, tax ¥ 0 ¥ 0