China's Vice Minister of Water Resources Jiao Yong, South Korea's Minister of Land, Infrastructure and Transport Yoo Il-ho and Japan's Minister of Land, Infrastructure, Transport and Tourism Ohta Akihiro (R-L) shake hands during a trilateral ministerial meeting at the seventh World Water Forum held in Gyeongju, South Korea, April 13, 2015. China, South Korea and Japan on Monday agreed to strengthen trilateral cooperation on water policy innovation during the seventh World Water Forum held in South Korea's southeastern cities of Daegu and Gyeongju. (Xinhua/Peng Qian)