US 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. [Photo/Xinhua]

Participants pose for 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. [Photo/Xinhua]

British Chancellor of the Exchequer Philip Hammond (L, front) talks with World Bank President Jim Yong Kim after 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. [Photo/Xinhua]