Zuo Ci wielded amazing Taoist power and was described as a psychic. He studied on Mount Emei in Sichuan, where he found The Book of Concealing Method (), from which he learned to ascend to the clouds astride the wind, to sail up into the great void itself; and how ...to pass through mountains and penetrate rocks; ...to float light as vapor, over the seas, to become invisible at will or change [his] shape, to fling swords and project daggers so as to decapitate a man from a distance.