The structure of the room was a little odd, though. Instead of a square, it was actually the shape of an octagon. Instead of calling it a house, some might prefer to refer to it as an array formation. Anyone who had been following this incident would know the main purpose of this formation, which was to prevent Gu Xijiu from teleporting.
Therefore, Gu Xijiu was trapped in the place. To minimize any chance for an escape, Yun Yanli did not even send any servants to help her. He must have been concerned that the female servants would end up being manipulated and used by Gu Xijiu.