● This film is the first film in Korea with the theme of ladies-in-waiting.
● At the time of shooting, another TV series "Money War" starring Jin-hie Park also entered the shooting period. The film was shot in the ancient city of Fuan in Jeonbuk, South Korea, and the location of the TV series was shot in the neighborhood of Seoul, so she traveled back and forth almost every day for three months and slept in the car.
Jin-hie Park revealed that although this is not her first time shooting a horror film, the sharp contrast between the beautiful design and the gloomy atmosphere of the film still makes her feel scared when watching the full version of the film.
Jin-hie Park, who plays a female doctor, asked the doctor for advice before filming and learned some techniques of pulse-taking and acupuncture. In order to write the characters written by ladies-in-waiting, I personally found a calligraphy teacher to learn calligraphy.
Xu Yingji, who plays Yue Ling, practiced for several hours to play the role of hanging and lay on the cold ground for a long time to play the role of corpse.