In
Fenshen Yanyi, Yuding Zhenren is said to one of the twelve disciples of
Yuanshi Tianzun, who is the co-founder of Branch Chan of Taoism. Yuding ranked the second of the Twelve Golden Xian () along with Yuanshi Tianzun's other eleven students. During the war between the Zhou and Shang armies, he fought alongside the Zhou army with the other Twelve Golden Xian, helping to overthrow the
Shang dynasty. He once assisted
Laozi, Yuanshi Tianzun, and other immortals in breaking the Immortal Formation. Furthermore, when
Jiang Ziya was trapped by the
Five Commissioners of Pestilence, he arrived promptly to save him. He ordered his disciple, Yang Jian, to meet the Three Great Emperors in the Fire Cloud Cave to obtain the
cohosh herb from
Shennong, thereby saving the three armies from the ordeal of smallpox. In ancient times, the
Jade Emperor's third daughter, Princess
Yunhua, secretly married a mortal man named Yang Tianyou in the mortal realm, and they had a son named Yang Jian. When the
Jade Emperor learned of this, he was furious and made a firm decision. He imprisoned his own daughter beneath Peach Mountain. In order to rescue his mother, Yang Jian became a disciple of Yuding Zhenren at Jinxia Cave in Yuquan Mountain. By the age of seventeen, he had cultivated powerful abilities that allowed him to stand proudly in the world. His martial skills progressed remarkably, especially after he obtained the Three-Pointed Two-Edged Blade. Driven by his deep desire to save his mother, he used his blade to split open Peach Mountain and rescued her. This legend has also become an important origin for the "filial piety" culture along the banks of the Guan River. Due to the story of Yang Jian seeking advice at Yuquan Mountain, the fame of Jinxia Cave (the Golden Dawn Cave) spread far and wide. In the Qing dynasty's
Yuquan Zhi (Records of Yuquan), it is recorded: "The Golden Dawn Cave is located at the foot of Fu Chuan Mountain and is named so because it is often illuminated by the radiance of the dawn." There is a place called Jinxia Cave located in the northern part of An County, Mianyang, Sichuan Province. Jinxia Cave Daoist Temple, situated in Gu Lou Village, Anchang Town, Beichuan County, was opened as a Taoist activity site in 1999. Jinxia Cave is perched atop Yuquan Mountain and is rarely visited by people. Within Jinxia Cave, there stands a broken stele on which is inscribed "The Practice Place ofEICYuding Zhenren." ==Temple==