Beijing (Chinese: 北京; pinyin: Běijīng; Wade-Giles: Peiching or Pei-ching; IPA: [peɪ˨˩ tɕɪŋ˥˥]; Chinese Postal Map Romanization: Peking; literally "Northern capital"; pronunciation), a metropolis in northern China, is the capital of the People's Republic of China (PRC). It is also known in English as Peking (English pronunciation). Beijing is also one of the four municipalities of the PRC, which are equivalent to provinces in China's administrative structure. Beijing Municipality borders Hebei Province to the north, west, south, and for a small section in the east, and Tianjin Municipality to the southeast. Beijing is China's second largest city, after Shanghai. It is a major transportation hub, with dozens of railways, roads and motorways passing through the city. It is also the focal point of many international flights to China. Beijing is recognised as the political, educational, and cultural centre of the People's Republic of China, while Shanghai and Hong Kong predominate in economic fields. Beijing is one of the Four Great Ancient Capitals of China. It will also host the 2008 Summer Olympics.