Why Was He Sent to Cultivate Immortality After Getting on the Wrong Bus?

(Not a harem, not brainless, not systematic) Zhong Yi, who accidentally got into the wrong car, discovered that the world is not as simple as he thought. When he realized that he was going to start cultivating immortality in another world, he suddenly found that the world had suddenly changed again. In this ever-changing world, what is life? Death for what?