The main hall is generally well lit, so it is not suitable for placing mirrors in well-lit places. In Feng Shui, the mirror belongs to Yin, which is a heavy and cold thing. The reflection of sunlight by the mirror will be counterproductive, and the light refracted by sunlight into the living room will pass through the mirror and form a light evil. In this way, people who live in it are prone to dizziness. Especially near the balcony, if there is a lake or river outside, it is even more inappropriate to set up a mirror in the living room.
(Excerpt, I hope it will help you = =)