Immortal Cultivator of the World

What should I do if I am targeted by a demon as soon as I pass through? What can I do to respond to him: "Rampant!!!" From then on, this troubled world ushered in a glimmer of light, and there was a ruthless man who loved to kill monsters. The polluted Sanqing, the strange way of heaven, the disappearing gods and Buddhas, can Ye Tian save himself and save the human race?