秉烛夜游: (指及时行乐) have night outings with candles in hand -- make merry while one can; enjoying the short span of life; have night outings with a lantern; hold a candle for a night excursion; take a
秉烛待旦: sit with the light in one's hand till morning; holding a candle and waiting for dawn -- to avoid suspicion
秉烛夜读: pore over one's books by the light of a candle