After refining the legendary Spring Autumn Cicada, the ruthless cultivator Fang Yuan is reborn 500 years into the past. Armed with centuries of knowledge, experience, and an unshakable will, he begins his journey once again in a cruel world where people cultivate mystical Gu insects to gain unimaginable power. Unlike ordinary heroes, Fang Yuan values only his own goals, using intelligence, manipulation, and overwhelming determination to overcome every obstacle. As he challenges powerful clans, ancient inheritances, and terrifying enemies, he seeks true immortality at any cost, regardless of morality or sacrifice.