You've Traveled Through Time, and You Can't Even Become Famous?

The modern soul travels to the world of immortality and possesses Liu San, who has extremely low qualifications and low status. As a time-travelling bastard, Liu San has to be the protagonist no matter what... He has no harem, he is ruthless and decisive, he will be arrogant when he should be, and he will never be cowardly, and he will be a grandson when he should be stubborn...