Chengu (help·info) (Chinese: 成都; pinyin: Chéngdū; Wade-Giles: Ch'eng-tu), located in southwest People's Republic of China, is the capital of Sichuan province and a sub-provincial city. Chengdu is also one of the most important economic centers and transportation and communication hubs in Southwestern China. According to the 2007 Public Appraisal for Best Chinese Cities for Investment, Chengdu was chosen as one of the top ten cities to invest in, out of a total of 280 urban centers.