Representatives from China and Vietnam press buttons at the unveiling ceremony for the wall of handprints at a sports center in Nanning, South China's Guangxi Zhuang autonomous region, Oct 20, 2010. The inauguration of the wall, which is composed of handprints of 5,600 youths from the two countries and occupies an area of 1,700 square meters and an exhibition area of 230 square meters, is one of the celebration events for the 60 year anniversary of the establishment of diplomatic relations between the two nations. [Photo/Xinhua]