Interpretation: stare back and bite your teeth to deal with your teeth. Refers to what means the other party uses to fight back. From Deuteronomy in the Old Testament: "An eye for an eye, a tooth for a tooth, a hand for a hand, a foot for a foot."

Reaction, revenge. It is the revenge custom of primitive society. When a member of a clan or tribe is injured from outside, the victims give equal revenge to each other, paying for life with life and returning injury with injury. The invading clan or tribe will hand over the troublemakers to ensure the collective security of the whole clan or tribe. Homosexual revenge is usually carried out by the next of kin of the victim. In the class society, this custom still exists, which is embodied in the code of hammurabi of Babylon and the Law of Twelve Bronze Tables of ancient Rome.