Shi Feiyang's transformation technique was quite rudimentary and self-taught, not imparted by others. He deduced it on his own from Emperor Huang's Golden Talisman, the Circulation Law, and the few lines of Heavenly Scripture spoken by Lady Bao Xiang. He could only transform into his own past appearance, and even then, he couldn't transform his clothes.
Although he could obtain merfolk silk, even the lowest quality merfolk silk in the human world could only be woven by a Heavenly Immortal. If he truly wore it in the Central Earth Mortal World, he would immediately become the most eye-catching presence.
