A fierce contest or struggle between two powerful or evenly matched adversaries.

When two kingdoms are at war, they do not execute the envoys sent to them.

lit. if two tigers fight, one will get injured; fig. if two powerful parties engage in conflict, someone is bound to get hurt.

In TCM, the progression of a disease viewed as a struggle between vital energy ([[正气|正氣|zheng4 qi4]]) and pathogenic factors ([[邪气|邪氣|xie2 qi4]]).

A situation where two parties are locked in a dispute, allowing a third party to benefit from their conflict; literally, when the snipe and the clam grapple, the fisherman catches them both.