Please ask for a ghost movie. It probably says that a ghost's lair is inside the mirror of a women's restroom.

"Catch a Ghost" starring Wang Jing, Wang Zuxian, Gao Lihong and Feng Suifan. It’s about a building with Feng Shui turned upside down. Generally speaking, the women’s restroom on the bottom floor of a building has the heaviest yin energy, but this building has the women’s restroom on the top floor. Those harmful ghosts were from Japan during the Anti-Japanese War. The ghost killed the female secretary, and then used her beauty to seduce and kill the men. Wang Jing, Wang Zuxian and Gao Lihong entered the mirror together to kill the ghost captain.

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