Demons and monsters run rampant, and martial arts reign supreme. After transmigrating eighteen years ago, Chen Yi has fallen into a life of backbreaking labor at the docks because he lacks the innate aptitude for cultivation. Although he possesses a Trait System, he can only draw once a year, and for seventeen years, every result has been practically useless. Just when he is about to accept his fate, his eighteenth draw unexpectedly grants him a rainbow-colored Mythical Trait—the Simulator! From then on, he can experiment, cultivate, and collect traits through simulated lives, then bring his gains back to reality. While others rely on talent, he relies on repeated simulations to rewrite his destiny. But the real trial has only just begun.