Mt Hengshan is one of the five most famous mountains in China known as the honored Bei Yue. It lies 60 kilometers south of the Datong City in Shanxi Province. Famous for its beautiful sceneries and precarious cliffs, the mountain is also a holy mountain for Taoists. It is said that Zhang Guolao, one of the Eight Immortals in Tao, cultivated himself on the mountain and reached immortality.