All People Practice Ghost Cultivation: My Wife Is the Ultimate Ghost

Lin Ting traveled to a world where everyone can practice ghost ways. In this world, evil spirits appear frequently, and yin and yang are reversed. However, everyone can gain spiritual power through channeling their ancestors and become a ghost. Because Lin Ting was a time-traveler, he did not have the psychic ability to see his ancestors appear, but with a wedding invitation, he got married to an SSS-level ghost. Thus, the youngest Celestial Master in the world was born (The introduction is weak, please read the text)