True Lord Gu Yi was one of Crimson Emperor's nine personal disciples, a Primordial Immortal who was famous for his speed among all the Evil Slaying Generals of the Heaven. As he was Crimson Emperor's personal disciple, even though he had stepped into the Primordial realm, he remained a subject of the Heaven at his own will. He was unlike most of the other Primordial Immortals, who either dwelt in seclusion in the Nine Heavens or occupied an outer heavenly realm and became the supreme leader there.
As an Evil Slaying General, his daily task was to take his men on patrol around the world. If he found any target that met the conditions of extermination laid out by the Heaven, he had the right to annihilate it on the spot. Besides that, whenever an important member of the Heaven summoned him with a secret spell, he had to quickly bring his men to the rescue.
