秉烛待旦[bǐng zhú dài dàn]
词典sit with the light in one's hand till morning：秉烛待旦。
词典holding a candle and waiting for dawn -- to avoid suspicion：秉烛待旦。
秉烛待旦[bǐng zhú dài dàn]
sit with the light in one's hand till morning; holding a candle and waiting for dawn -- to avoid suspicion