A woman displays a stamp issued by San Marino on May 8, 2009 with an Italian sentence on it saying "Towards Shanghai 2010", in east China's Shanghai, July 2, 2009. San Marino signed today the participation contract to the Shanghai 2010 World Expo, attending the third World Expo since World War II. San Marino set the theme "The City-State. The World's Smallest and Oldest Life" to let know the relations between the city and its historic centre, the state, its territory and its institutions as well as the unique institutional system with two Heads of the State and the Government. (Xinhua/Ren Long)
