Lüshunkou District

Lüshunkou District is a district of Dalian, in Liaoning province, China. Also called Lüshun City or literally Lüshun Port, it was formerly known as both Port Arthur (亚瑟港; 亞瑟港; Yàsè Gǎng; Russian: Порт-Артур, romanized: Port-Artur and Ryojun. The district's area is 512.15 square kilometres and its permanent population as of 2010 is 324,773.Lüshunkou is located at the extreme southern tip of the Liaodong Peninsula. It has an excellent natural harbor, the possession and control of which became a casus belli of the Russo-Japanese War.