1. From the perspective of home feng shui, it is not good to put mirrors on the balcony. If the balcony does not have straight corners, it is best not to put mirrors outside. If there are residents opposite, it will be harmful to others. Unfavorable, it may bring some trouble to others.
2. If there are no residents opposite, it will be detrimental to yourself and all aspects will be affected, so it is best not to put a mirror outside the balcony.