Introduction to Qiuchi Mountain: Qiuchi Mountain, also known as Changyang Mountain, is located at the junction of Gansu, Shaanxi and Sichuan provinces, facing Shu and Qin at the back, and the situation is dangerous. It looks like a small boat in a mountain city, surrounded by red rock walls and extremely dangerous terrain. The West Han River flows from the northwest around the foot of the mountain to the south, and the Luoyu River flows from the southeast along the foothills of the mountain to the west and joins the West Han River. The two rivers merge under the mountain to form a dangerous landscape surrounded by water on three sides and holding mountains on one side. In history, armies and bandits also set up camp here many times.