I Change the Future in Various Timelines

After time travel, Lin Xuan, as Lin Xuan's player, was given two different responsibilities. When in the lawful camp, his task is to ensure that history advances as required and reaches the original ending. The destiny of protecting the world from destruction, or the destiny of witnessing the destruction of the world. Protect a race that shouldn't be destroyed, or destroy the world with your own hands. When in the Chaos camp, his mission is to change and change the future according to his own ideas. Let those who are about to die survive, and let those who have no intention of competing for the throne withdraw. Change the course of history, bring future technology to the present, so that war will never happen again, and death will never come again.