According to legend, during the period of the Bohai Kingdom in Tang Dynasty, there were five women stationed a troop on the mountain, who repeatedly defeated the rebel forces. The rebels were angry and surrounded the mountain for a long time, resulting in the people on the mountain being at the end of their tether. The five women prayed to heaven, and suddenly Avalokitesvara appeared. The Avalokitesvara sprinkled water in the pure bottle, then the water turned into a mountain spring, so everyone was saved. After this, the spring was called "Wunvquan". Today, the spring keeps flowing all the year round, and it is not frozen in winter.

The spring is 8 meters long and more than 5 meters wide, and a boulder with a height of more than 4 meters stands in the south of the spring, engraved with the calligraphy of "Wunvquan" by Xizhi Wang. There are two holy water gourds buried under the stone, and the water flows out from the mouth of the gourds. It is said that drinking the water can dispel diseases and eliminate disasters. There is a 4-meter-long and 2.5-meter-high scenic stone in the north of the spring. It is engraved with "Map of Five Women Collecting Herbs "on the front, the "Five Women's Legend" on the back. There is a leisure square paved with stone slabs around the spring, where visitors can enjoy sweet water and relax.