Photo taken on Sept. 8, 2015 shows the eight diagrams field in Hangzhou, capital of east China's Zhejiang Province. China will host the 2016 Group of Twenty (G20) summit in the eastern city of Hangzhou, best known for its scenic West Lake, on Sept. 4-5, Chinese President Xi Jinping announced in Antalya, Turkey, on Nov. 16, 2015. (Photo: Xinhua/Xu Yu)
