晋朝的时候,有个穷书生名叫车胤,家贫买不起灯油,夜里读书,就捉萤火虫装在纱袋里照明。还有一个人名叫孙康,冬天常常站在雪地里,利用雪地的反光读书。后来,这两人都学有所成,功成名就。两个人苦学的名声也被人们到处传颂,大家都把囊萤和映雪作为学习的典范。有一天傍晚,孙康去拜访车胤,正好车胤不在。孙康问他家人:“主人到哪儿去了呀?”家人回答:“到河边捉萤火虫去了。” When the Jin Dynasty, there is a poor scholar called car Yin, poor family can not afford lamp oil, reading at night, to catch fireflies installed in the yarn bag lighting. There is also a person named Sun Kang, often standing in the snow in winter, the use of reflective snow reading. Later, both learned well and succeeded. The fame of two people studying hard has been praised by people everywhere, we all think of capsule fireflies and Ying Xue as a model for learning. One evening, Sun Kang went to visit the car Yin, just car Yin is not. Sun Kang asked his family: “Where did the host go?” “Family replied: ” To the river to catch fireflies go. "