- 两虎相争 liǎnghǔxiāngzhēng rivalryA fierce contest or struggle between two powerful or evenly matched adversaries.
- 两国相争,不斩来使 liǎngguóxiāngzhēng, bùzhǎnláishǐ spare envoysWhen two kingdoms are at war, they do not execute the envoys sent to them.
- 两虎相争,必有一伤 liǎnghǔxiāngzhēng, bìyǒuyīshāng mutual harmlit. if two tigers fight, one will get injured; fig. if two powerful parties engage in conflict, someone is bound to get hurt.
- 正邪相争 zhèngxiéxiāngzhēng vital-pathogen struggleIn 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]]).
- 鹬蚌相争,渔翁得利 yùbàngxiāngzhēng, yúwēngdélì third-party benefitA 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.