evidence: China has 33 administrative units directly under the central government; these consist of 22 provinces, 5 autonomous regions, 4 municipalities (Chongqing, Beijing, Shanghai, and Tianjin), and 2 special administrative regions (Hong Kong and Macau). The island province of Taiwan, which has been under separate administration since 1949, is discussed in the article Taiwan. Beijing (Peking), the capital of the People’s Republic, is also the cultural, economic, and communications center of the country. Shanghai is the main industrial city; Hong Kong is the leading commercial center and port. [...] China stretches for about 3,250 miles (5,250 km) from east to west and 3,400 miles (5,500 km) from north to south. Its land frontier is about 12,400 miles (20,000 km) in length, and its coastline extends for some 8,700 miles (14,000 km). The country is bounded by Mongolia to the north; Russia and North Korea to the northeast; the Yellow Sea and the East China Sea to the east; the South China Sea to the southeast; Vietnam, Laos, Myanmar (Burma), India, Bhutan, and Nepal to the south; Pakistan to the southwest; and Afghanistan, Tajikistan, Kyrgyzstan, and Kazakhstan to the west. In addition to the 14 countries that border directly on it, China also faces South Korea and Japan, across the Yellow Sea, and the Philippines, which lie beyond the South China Sea.