Liaodong Peninsula

The word "Liaodong" literally means "Liao region's east", referring initially to the Warring States period Yan commandery of Liaodong, which encompassed an area from modern Liaoning-Jilin border in the north to the Chongchon River on the Korean Peninsula in the south, and from just east of the Qian Mountains to a now-disappeared large wetland between the western banks of middle Liao River and the base of Yiwulü Mountain, historically known as the "Liao Mire" (遼澤, Liáo zé) roughly in between the modern Xinmin, Liaozhong, Tai'an, Panshan and Beizhen).

It later came under the rule of the Gojoseon kingdom, which encompassed the northern Korean Peninsula and the region southeast of the Liao River.

In the late 4th century BC, the expanding Chinese State of Yan conquered this region from Gojoseon,[1] and established the Liaodong Commandery.

A prior Qing prohibition on immigration to Northeast China was officially relaxed, marking the start of Chuang Guandong.

After Japan lost World War II, and the People's Republic of China was established in 1949, Liaodong was again under unified Chinese rule, where it has been to this day.