Combined photo shows the Liuhe Pagoda by the Qiantang River in Hangzhou, capital of east China's Zhejiang Province. The G20 Summit will be held on Sept. 4-5 in Hangzhou, dubbed "paradise on earth" with a history of over 2,200 years. (The file photo was released by Xinhua while the lower photo was taken by Xu Yu on Sept. 17, 2015.) (Xinhua)