Peng Liyuan (C), wife of Chinese President Xi Jinping, Bun Rany (L), wife of Cambodian Prime Minister Hun Sen, Mehriban Aliyeva (2nd L), wife of Azerbaijan's president Ilham Aliyev, Raisa Atambayeva, wife of Kyrgyz President Almazbek Atambayev (2nd R) and Dargia Nazarbayeva, daughter of Kazakhstan's President Nursultan Nazarbayev (R), poses for a group photo during their visit to Yuyuan Garden in Shanghai, May 21, 2014. The fourth summit of the Conference on Interaction and Confidence Building Measures in Asia (CICA) opened in Shanghai on Wednesday. [Xinhua]