Peng Liyuan (2nd L), wife of Chinese President Xi Jinping, together with spouses of world leaders attending the fourth summit of the Conference on Interaction and Confidence Building Measures in Asia (CICA), watches Su Huiping, a successor of Chinese non-material cultural heritage Gu Embroidery, demonstrating the craft of Gu Embroidery, in Shanghai, May 21, 2014. [Xinhua]