World Expo 2010 was held in Shanghai from May 1 to Oct. 31. 190 countries and 66 international organizations participated in the Expo. More than 73 million tourists from home and abroad visited the Expo Park, reaching the largest number of attendance in all Expos. The theme of the Shanghai Expo is "Better City, Better Life", which reflects human's wish for a more livable environment and a better life. The China Pavilion was one of the most popular pavilions among all in the Expo Park.