C22 Kyphosis(2)
Fighting at the mouth was the saying of the antique shop. The meaning was that if two people could not accept each other, they would each take out a piece of object. This item could be real or fake, and then they would test each other's eyesight to see if the item was real or fake. Furthermore, they would also have to tell where the real items were!
This type of battle was usually a wager