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