曲水流觞

qūshuǐ-liúshāng

[(of a gathered crowd) drink water from a winding canal with one wine cup floating on it so as to wash away ominousness] 古民俗, 每年农历三月在弯曲的水流旁设酒杯, 流到谁面前, 谁就取下来喝, 可以祓除不吉利