Lu Yan: I am a successor to socialism, and I don't believe in ghosts.
Ghost: Then Lu Yan, let's play
Lu Yan: Ahhhhhhh! There is a ghost (faints)
After waking up: Haha, I must have been dreaming just now. How could there be ghosts in this world? It's impossible that they don't exist.
Ghost:? ? ? ? Wait, Lu Yan, we meet every night and you say I don't exist? ? ? ?