What does the 25th rib mean?

There is no morality. Humans generally have 24 ribs, of which 12 is located in the front of the body, and 12 is located in the back of the body. Some very few people may have extra ribs, that is, the 25th rib, but this is not common. The 25th rib itself has no special and symbolic significance. In literature, film and television works or folklore, the 25th rib may be endowed with some mysterious meaning. For example, the legendary Nu Wa added a 25th rib when transforming human beings. But these statements have no scientific basis, just some fictional stories or metaphors.