Yang Xian, who is he? According to the Qing Dynasty's "Great Mountain Taihe Mountain Annals" and "Junzhou Annals", his pseudonym was Mr. Huayang, also known as Mr. Huayang. During the Tang Dynasty, he lived in seclusion in a cave 200 steps east of the Wulong Palace on Wudang Mountain, practicing fasting and taking martial arts. He was over a hundred years old. When seeing people coming to visit, he would fly away. Or if someone asks why he avoids people, he would say, "As soon as outsiders come, there is a strong stench rushing towards them, making them feel uncomfortable and they have no choice but to avoid them." Later generations were unfathomable and called the place where he practiced Yang Xianyan. This rock is one of the thirty-six rocks of Wudang Mountain.