Uniform Stealing Board

Chinese anime. A couple of young women are trying to exit a palace where they've been confined, with the help of a maid, but they are stopped by a female security guard. One of the women knocks the maid out (not sure why), then convinces the guard through some form of hypnosis (I think) to hand over her uniform.

Starts about 1 minute in.

https://www.youtube.com/watch?v=s5B9cJIVaFw