Chinese Premier Li Keqiang (3rd R, front), together with other leaders, views a bicycle made of a new-type material at an exhibition in Sanya, south China's Hainan Province, March 23, 2016. Chinese Premier Li Keqiang, Thai Prime Minister Prayuth Chan-ocha, Cambodian Prime Minister Hun Sen, Lao Prime Minister Thongsing Thammavong, Vice President of Myanmar Sai Mauk Kham and Vietnamese Deputy Prime Minister Pham Binh Minh jointly visited the Lancang-Mekong Cooperation exhibition in Sanya on Wednesday. (Xinhua/Rao Aimin)