Is it good to put a mirror in the wardrobe? Some people say it is unlucky, right?

Feng Shui says that it is best not to enlarge the mirror in the bedroom facing the bed. In fact, their explanation is: at night, if you accidentally wake up, you will suddenly see yourself in the mirror, which will scare you. . That's all (there are also some ghostly things, such as seeing bad things in the mirror). If you don't have any psychological shadow, it won't make any difference whether you put a mirror or not. So you don’t need to pay too much attention to that. Just like in the past, mirrors were placed on large wardrobes. Isn’t that normal?