Delegates attending the sixth session of the Northeast Asia Trilateral Forum pose for group photo in Hangzhou, capital of east China's Zhejiang Province, April 25, 2011. The annual session of the Northeast Asia Trilateral Forum opened here on Sunday, holding former political leaders, scholars and entrepreneurs from China, Japan and South Korea to discuss issues of common interests. The forum, cosponsored by China's Xinhua News Agency, Japan's Nikkei news group and South Korea's leading daily newspaper, Joong-Ang Ilbo, seeks to strengthen non-governmental exchanges among the three nations. (Xinhua/Wang Xiaochuan)