When the Western Han Dynasty, there's a child of farmers, called Kuangheng. He was a boy wanted to read, but because my family was poor, no money to go to school. Later, he and a relative of learning literacy, the ability to have a reading.
Kuangheng could not afford books, had to borrow books to read. At that time, the book is very valuable, there are books people do not want to lend other people easily. Kuangheng busy on the season, day laborers to wealthy families, not wages, so the only people borrow books for him.
After a few years, Kuangheng grown up, became the main labor force at home. He spent all day working the land, only at noon Xieshang time, only to see something a little book, so Yi Juanshu often be able to read 10 days and a half months. Kuangheng very anxious, thought: During the day kinds of crops, no time to read, I can use some time to look at the book. But Kuangheng family were very poor, can not afford the oil lamps, how should we do?
One night, Kuangheng back during the day in bed reading books. Carrying their backs, suddenly saw the wall of the east line through to light. Huo, he stood up, went to see a side wall, ah! From this Bifenglitou over the neighbor's lights. As a result, Kuangheng thought of a way: he took a knife to Qiangfeng dug too big. In this way, through years of light was great, and he came in light penetration Couzhao to read from the books.
Kuangheng is so hard to learn, later became a very learned man