The restaurant and bathroom have mirrors on the ceiling. The Feng Shui master said it is not good.

It is indeed not good. Mirrors have a reflective effect. The wealth accumulated in the ceiling of the restaurant is reflected out, which symbolizes the flow of wealth from home. It is best to have a sky pool on the suspended ceiling of the restaurant. You can use a ceiling shape with low sides and high middle. In this way, it is not only visually more comfortable, but also the concave spot in the middle of the ceiling forms a gathering "heaven and earth", which is of great benefit to the feng shui of the restaurant.