Mother-in-law lines are two lines extending from the side of nose, which are typical phenomena of skin tissue aging and skin surface depression. Puppet lines, also known as "salivation lines", are often called corners of the mouth, or brackets. Puppet pattern is a common skin wrinkle formed by facial expression muscles, gravity, heredity and other factors. Many people's puppet patterns are not only very obvious, but also often accompanied by many deep arc depressions on the outside or below the quarrel.