Land Frontier: China's land frontier is about 20,000 km in length, extending from the Yalu River estuary on the Sino-Korean boundary to the Beicang River estuary on the Sino-Vietnamese boundary. The country is bounded by Korea ti the east; Russia to the northeast; Mongolia ti the north; Russia and Kazakhstan to the northwest; Kyrgyzstan, Tajikistan, Afghanistan and Pakistan to the west; India, Nepal, Sikkim and Bhutan to the southwest; and Myanmar, Laos and Viet Nam to the south.
Coastline: China's 18,000-km-long continental coast is washed by the Bohai Sea, the Yellow Sea, the East China Sea and the South China Sea.. The Pacific is off the eastern shore of the Taiwan Island.
There are more than 5,000 islands of varying sizes on the Chinese territorial seas, the largest of them being the Taiwan Island, and the second largest, The Hainan Island. Nine-tenths of these islands are found on the East China Sea and the South China Sea. There are also a number of archipelagos on the ocean, such as the Zhoushan Archipelago and the Nansha Archipelago.Shandong, Liaodong, and Leizhou are three largest peninsulas.
The Chinese territorial seas are 12 nautical miles in width. The Bohai Sea in the arms of the Liaodong and Shandong peninsulas, and the Qiongzhou Strait between the Leizhou Peninsula and the Hainan Island are continental seas.
The countries separated from China by the sea are, from north to south, the Republic of Korea, Japan, the Philippines, Brunei, Malaysia and Indonesia.