Experts have given a scientific explanation: there is a scientific basis for the Forbidden City to see maids, because the palace walls are red and contain ferroferric oxide, and lightning may conduct electricity. If a maid-in-waiting happens to pass by, then the palace wall is equivalent to the function of a video tape at this time. If lightning strikes again in the future, the shadow of the recorded maid-in-waiting may appear like a video screening, but it is still incredible.

Extended data:

According to experts from the Forbidden City, "Forbidden City people" have never seen or experienced supernatural phenomena in the Forbidden City. Those widely circulated stories are all made up by hearsay and embellishment after a meal. With the expansion of the opening area of the Palace Museum in June 10, many areas that have not been opened in the past 90 years began to meet the audience, and the closed areas were transformed into public spaces for exhibitions to welcome every audience.

For example, Waixi Road, where Cining Palace and Shoukang Palace are located, as a "woman's world", is full of all kinds of historical stories and folklore, and is often mentioned by major film and television dramas. After the opening up, this area unveiled a mysterious "veil" to the audience, presenting a real and unique western region with exquisite exhibition furnishings and elegant courtyard gardens.

People's Network-1992 What happened to the mysterious maid-in-waiting highlighted on the wall of the Forbidden City? Experts reveal the truth

People's Daily Online-The Forbidden City responds to paranormal's revelation 1992 The Forbidden City paranormal.