Introduction to Kou River: Kou River was called Zhan River and Guyuan River in ancient times. It originates from the northwest of Laoye Ridge in Heyuan Village, Fengshu Village, Zhenxing Township, Xifeng County, Tieling City. Because the river is a mountainous river, it rises and falls steeply. Like ferocious beasts, it is like thieves and bandits looting after the flood, so it is named Kou River.