After Cultivating Immortality, Who Would Still Be a Licking Dog?

Good news, Xu An traveled to a world where he can practice. Bad news, he only has seven days left to live. Even worse news is that the original owner is the ultimate slut. He was blacklisted after being defrauded of money by a goddess. His mother died tragically, his family was ruined, and he still has a lot of resentment. Now he has nothing, penniless, and is still affected by the residual resentment of the original owner, and his body is weak. Just then, the system came. [If you were given a chance to do it again, what would you do? Isn't this nonsense? Of course, you need to work hard to improve yourself, punch the white lotus, step on the green tea bitch, and live your own wonderful life! Licking a dog? Not even a dog! No matter in which world, only self-improvement is the kingly way! [Looking back in time...]