Don't open the door. The meaning of this ghost story is not to open other people's doors because if the door is opened, people may encounter all kinds of strange things such as ghosts and spirits. This story warned people not to trust strangers and not to rashly enter other people's homes to avoid unnecessary trouble. In addition, this story also emphasized the vigilance and safety between people because if people were not alert to the existence of ghosts, they might be hurt by them.