Peng Liyuan (2nd L, front), wife of Chinese President Xi Jinping, Bun Rany (R, front), wife of Cambodian Prime Minister Hun Sen, Mehriban Aliyeva (3rd R, front), wife of Azerbaijan's president Ilham Aliyev, Raisa Atambayeva (L, front), wife of Kyrgyz President Almazbek Atambayev and Dargia Nazarbayeva (2nd R, front), daughter of Kazakhstan's President Nursultan Nazarbayev, watch Su Huiping, a successor of Chinese non-material cultural heritage Gu Embroidery, demonstrating the craft of Gu Embroidery 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]