Liaoyang city, Liaoning province. Yanzhou City, a military castle built after Koguryo occupied Liaodong City (now Liaoyang) in the early 5th century A.D., was originally named "Baiyancheng", a provincial-level cultural relics protection unit in Liaoning Province, and was approved as a national-level cultural relics protection unit by the State Council in 20 13.

Liaoyang, formerly known as Xiangping and Liaodong City, is a prefecture-level city in Liaoning Province. The State Council approved China as a modern industrial city with petrochemical industry as the mainstay and one of the central cities in south-central Liaoning.

Liaoyang borders Benxi, fengcheng city and Xiuyan Manchu Autonomous County in the east, Anshan and Haicheng in the south, Liaozhong and taian county in the west and Shenyang in the north. The total length of Liaoyang border line is 471.8km. ..

Liaoyang city is located in the transition zone between Liaodong low hill and Liaohe plain, with complete landform types and obvious differentiation law, typical layered landform and landform zoning law. From Baiyun Mountain in the southeast border to the bank of the northwest border river (Hunhe River), the terrain is from high to low, from Zhongshan, low mountains, high hills, low hills, terraces to plains, with distinct layers.

The climate characteristics of Liaoyang area are also different because of the different landforms. A temperate humid monsoon climate is formed in the eastern hilly area, a temperate semi-humid monsoon climate is formed in the northern hilly plain, and a warm temperate semi-humid climate is formed in the western plain along the river.