宰予晝寢 [ㄗㄞˇ ㄩˇ ㄓㄡˋ ㄑㄧㄣˇ; zai3 yu3 zhou4 qin3] Zai Yu sleeps by day (idiom); refers to story in Analects of Confucius remonstrating bitterly with his student for sleeping during lectures ◄ ►