Why can't posters be posted in the bedroom? I want to ask a question about Feng Shui. Are posters, portraits, etc. not allowed on the walls of the bedroom?

Are advertising papers and posters harmful to the body in the bedroom? Advertising papers, posters and other advertising materials are all spray-coated with ink, so they still contain some harmful substances, and these colored substances are volatile. , if it is in the house, it will still be bad after a long time. If you want to prevent the wall from being stained, you can consider using wood boards, paper and other materials that are more environmentally friendly. If you like people to chase stars, it is recommended to bring a photo frame to prevent air pollution. I would like to ask a question about Feng Shui. Is it not allowed to put posters, portraits, etc. on the bedroom wall? As long as the photo is not placed in the worst part of the room, other things have nothing to do with Feng Shui, such as zooming in. Photos such as wedding photos hung on the wall are no larger than poster photos. Many unlucky things happen to other people's homes, and there are many reasons for them, which may not necessarily have anything to do with Feng Shui. Is it unlucky to have a poster right above the bed? To answer what professionals say in Feng Shui, don’t hang photos or paintings of portraits in the bedroom. If there are any in the bedroom, the people living there may be prone to cheating or have relationship problems. Other scenery and the like, it doesn't matter. It should be noted that things must be positive, optimistic, and positive. If they are sad pictures and photos, hanging them will also affect the people living there