Introduction to the coffins of the three generals: It is said that when the female general Mu Guiying of the Yang clan took command, she fought with the Liao soldiers in Hongzhou, Huixian County for a decisive battle. In order to defeat more with less, he sent three generals, tied broomsticks to their horses' tails, and dragged out a stream of dust to the west to lure the Liao soldiers to divide their forces. The Liao soldiers detached a group of troops to pursue him, but soon found out that they had been fooled, and pursued him relentlessly. The three generals retreated to the top of Jiulian Mountain and jumped off the cliff resolutely. Mother Jiulian turned the stone into a coffin, hence the name Three Generals Coffin.