The People's Republic of China, commonly known as China, is the largest country in East Asia and the most populous in the world with over 1.3 billion people, approximately one-fifth of the world's population. It is a socialist republic according to its constitution)ruled by the Communist Party of China under a single-party system, and has jurisdiction over 22 provinces, five autonomous regions (Xinjiang, Inner Mongolia, Tibet, Ningxia, and Guangxi), four municipalities (Beijing, Tianjin, Shanghai, and Chongqing), and two highly autonomous Special Administrative Regions (Hong Kong and Macau). China's capital is Beijing