CHENGDU, July 24, 2016 (Xinhua) -- U.S. Treasury Secretary Jacob Lew (back) talks with International Monetary Fund (IMF) managing-director Christine Lagarde before a group photo during a meeting of G20 finance ministers and central bank governors in Chengdu, capital of southwest China's Sichuan Province, July 24, 2016. (Xinhua/Jiang Hongjing)