Not a Ghost Ghost

There are ghosts in the world There is really a ghost Really I'm not going to lie to you, it's true Otherwise, what are these things? Ghost 1: What a ghost, a trick to deceive children Ghost 2: According to modern science, it is impossible for things like ghosts to exist Ghost 3: Such gods and ghosts are the result of insufficient human hearts. Ghost 4: That's right, there are no ghosts in the world Xiao Sheng: Then who are you? : We are not ghosts~~ Okay, okay! No, no, don't yell, your head hurts (All the names are made up, and the place names only indicate the general area. Don't take them seriously. The occupations and professional information involved come from the Internet. Please forgive me if there are any mistakes.)