聚螢映雪 [ㄐㄩˋ ㄧㄥˊ ㄧㄥˋ ㄒㄩㄝˇ; ju4 ying2 ying4 xue3] lit. to collect fireflies and study by their light (idiom); fig. ambitious student from impoverished background burning the midnight oil ◄ ►