To collude in evil; to conspire with malicious intent, often referring to two individuals ganging up for a nefarious purpose.
那些人为了不正当的目的，经常二五耦，做出了许多令人不齿的事情。
Those individuals often colluded in evil for improper gains, engaging in many contemptible acts.
Era:
Ancient
Frequency:
Story:
During the reign of Duke Xian of Jin, internal conflicts were sharp and intense. Duke Xian's concubine, Li Ji, who was favored by him, colluded with two other favored officials, Liang Wu and Dongguan Pi Wu, to help her son usurp the throne. People at that time referred to this sinister alliance as 'Er Wu Ou'.
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