Introduction to Xiliang Mountain: Tianmen Mountain is the collective name of East and Xiliang Mountains. The two peaks stand opposite each other, like a gate set by nature. Dongliang Mountain, also known as Bowang Mountain, is 82.12 meters high; Xiliang Mountain, also known as Liangshan Mountain, is 88.1 meters high. Among the two mountains, Dongliang Mountain is the steepest. It is truly a wonder of the miraculous craftsmanship of nature.