UN Secretary-General Ban Ki-moon arrives in Hangzhou to attend the G20 Summit in Hangzhou, capital city of east China's Zhejiang Province, Sept. 3, 2016. (Xinhua/Chen Fei)
UN Secretary-General Ban Ki-moon arrives in Hangzhou to attend the G20 Summit in Hangzhou, capital city of east China's Zhejiang Province, Sept. 3, 2016. (Xinhua/Chen Fei)