Of course, the ghosts in the Forbidden City after five o'clock are also supernatural. The Forbidden City has a scientific explanation: there is a scientific basis for the palace ladies to be seen in the Forbidden City, because the palace walls are red and contain iron tetroxide, and lightning may conduct electrical energy down. If a palace maid happens to pass by, then the palace wall will act like a video tape. If lightning happens again in the future, the shadow of the recorded palace maid may appear like a video projection. … Continue readingRecords Of Supernatural Events In The Forbidden City