The significance of climbing the mountain on the Double Ninth Festival is to avoid disasters. According to legend, during the Eastern Han Dynasty, epidemic demons harmed Runan area and epidemic diseases prevailed. There was a man named Huan Jing who took Fei Changfang, a Taoist priest, as his teacher and learned the magic of eliminating disasters and saving people. One day, Fei Changfang told Huan Jing that on the ninth day of September, the god of plague attacked people again and told Huan Jing to go back and save the villagers: "On the ninth day, leave home and climb high, put Cornus officinalis in a red cloth pocket, tie it to your arm and drink chrysanthemum wine, and you can defeat the god of plague." Huan Jing went home and told all the villagers. On September 9, the Ruhe River surged and the plague demon struck. But because of the pungent chrysanthemum wine, the smell of Cornus officinalis stung the heart and made it difficult to get close. Huan Jing wielded a sword to cut the plague at the foot of the mountain. At night, people came home and found that "chickens, dogs, cattle and sheep died suddenly". People survived because they went out to climb mountains, so it has been passed down to the present.