Old things of unknown origin
It's best not to take other people's things. In particular, don't pick up something of unknown origin and go home. Especially mattresses, bedding, clothes and other items that come into contact with people's bodies. Because the old things will retain the breath of the last user, if the last user is sick or unlucky enough to die, it will leave the breath of decline, illness and death on the old things. Bringing these old things home is equivalent to bringing home the spirit of decline, disease and death.
Unknown idol
Idols are also things that can't be taken home casually. Although it is a good thing to offer Buddha to goodness, it is also possible to offer sacrifices to God at will. Even if you don't know who to offer sacrifices to, you may "offer sacrifices to God without worshipping ghosts". If you want to invite an idol home, you can't bring an idol of unknown origin home. You have to go to a special place to ask God and a powerful master to light it, so that you can really come to the Buddha.
Burial objects in ancient tombs
Many people like to keep some antiques at home, thinking that decorating the home with antiques can show that the owner of the home has taste and is extraordinary. From the perspective of geomantic omen, sometimes not all antiques can be kept at home. Some antiques were stolen from ancient tombs by grave robbers, then sold to the black market and finally given to you. Such antiques have not been "purified" and are full of yin, but may have a great impact on family fortune.
Therefore, although antiques are valuable for collection, it is recommended to ask a professional feng shui master to "purify" the antiques after purchase, dip cinnabar with a new brush and use red cloth as the bottom, so as to ensure the safety and smoothness of the home. Or, move these antiques to a sunny place to dry, let them pass through, and then open them. After a series of professional antiques, it can bring good luck to the family.