Prehistoric: the Human Race Has Millions of Golden Immortals, All of Whom Can Fight the Way of Heaven.

Lin Ao inexplicably traveled to the prehistoric world and possessed the body of a recently deceased acquired human. At this time, it was during the lich's calamity. In a prehistoric world full of calculations and dangers, Lin Ao felt completely powerless. Fortunately, he awakened to the life simulator, which gave him hope. However, after his first life simulation, he discovered that there were only ten years left before the catastrophe of the human race. Time is running out. In order to cope with the approaching catastrophe, Lin Ao can only continue to simulate life and gain opportunities to improve his strength in simulations again and again...