乌头白，马生角

Explanation: It appears unlikely metaphor. 　　Usage: Complex sentence; attributive, clause; containing derogatory 　　Source: Western Han Qian, "Records of the Historian of Assassins" Aconitum white horse horned, were promised ears. " 　　Examples: As you mean, they - can not succeed! ★ "Beverly Hills Cop" Seventh back Thesaurus:  Aconite Horse Point