Can I cut my nails on the fourth day of the Lunar New Year?

According to folklore, if you cut your nails at night, your nails will turn gray, or your soul will be cut open, or you will not see your parents for the last time. As adults often say, crying again is to send you away or feed the wolf or something. Children know nothing about science. So adults can only rely on fear at first. These statements are all said by the old man and handed down by the old man.