Separating tendons and twisting bones to wrap around the dragon's hand, also known as "Eighteen Falls of Shangyi", is one of the secret skills of the Xuanzhen Shenjian Sect of Wudang Zixiao Sect. It is the founder who opened the door to this sect. During the Chenghua period of the Ming Dynasty, it was created by Taoist priest Xuanzhen of Wudang Zixiao and Taoist priest Yuanzhen of Xuanjianzi, who was known as the "Xuanjian Divine Palm" in the Jianghu circles. The author has practiced Xuanjian martial arts with his grandfather Li Wenming and uncle Li Wenzhong since he was a child. He has a little knowledge of the mystery of this skill. Now he has compiled it according to his teacher's order for Xuanjian martial arts enthusiasts to learn.