I'm Trying to Catch Ghosts in a Mental Hospital

[Single Female Protagonist] [Suspense] [Ghost Hunting] Xiao Wen traveled through time and woke up to find that he was in a mental hospital. He tried his best to explain that he was not mentally ill, but as soon as he said it he was completely wrong. What's even more amazing is that many of the words come out easily! He accidentally said that he was invulnerable, so he obtained the indestructible body of Vajra. He accidentally said that there was a ghost, and ghosts sprung up overnight. Xiao Wen said it unintentionally, and he accepted it! He had to deal with the bad ones one by one. Just when he thought he had complete control over the world, he discovered that the truth of the world was even crueler!