UN Secretary-General Antonio Guterres (L) shakes hands with World Economic Forum (WEF) founder and Executive Chairman Klaus Schwab at the annual meeting of the World Economic Forum (WEF) in Davos, Switzerland, on Jan. 19, 2017. The 2017 annual meeting of the World Economic Forum (WEF) kicked off in Davos on Jan. 17 and will last to Jan. 20. (Xinhua/Xu Jinquan)