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Cash Dividend (Details)
$ / shares in Units, ¥ in Millions, $ in Millions
Dec. 13, 2018
$ / shares
Dec. 31, 2019
CNY (¥)
Nov. 30, 2019
USD ($)
Dec. 31, 2018
CNY (¥)
Cash Dividend        
Cash dividends declared (Per share) $ 0.34      
Dividends payable   ¥ 678 $ 100 ¥ 658