In real life, many people have dreamed of losing their teeth. In China and some western countries, there has been a saying among the people that dreaming that they have lost their teeth indicates that there will be disaster for their relatives at home. China's ancient book The Duke of Zhou clearly stated that losing one's teeth was a symbol of "family loss". Why? Because when people vaguely feel that the old man may die, the subconscious does tell you by losing his teeth. Because teeth are exposed bone tissue, tooth loss means "separation of flesh and blood"