斷袖之癖 [ㄉㄨㄢˋ ㄒㄧㄡˋ ㄓ ㄆㄧˇ; duan4 xiu4 zhi1 pi3]
 lit. cut sleeve (idiom); fig. euphemism for homosexuality, originating from History of Western Han 漢書 emperor Han Aidi (real name Liu Xin) was in bed with his lover Dong Xian, and had to attend a court audience that morning. Not wishing to awaken Dong Xian, who was sleeping with his head resting on the emperor's long robe sleeve, Aidi used a knife to cut off the lower half of his sleeve.

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