Fantasy: Grandpa Said He Comes from 2023

After the amnesiac Luo Chen was exterminated, he was taken into Taiyi Temple. When I woke up, the arrogant old man from nine parallel times and spaces wanted to teach me the skills. Which one should I choose, Buddhism, Taoism, ghost way, or demon way? I have nine grandpas, do I still have to choose? Isn't this a curse? I want them all in the thirty-six realms of the heavens and the seventy-two dharmas! Note: Although the protagonist is not an extreme egoist, please do not join the Virgin Mary faction, as you may feel uncomfortable, so don't waste each other's time. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.