In the Western Han Dynasty, there was a boy called Kuang Heng. He was born in a poor family and couldn't go to school. Luckily, one of his relatives taught him to read and he became very interested in reading.
At that time, books were expensive. Kuang Heng couldn't afford books, so he decided to borrow some. He worked for a rich man without getting paid. The rich man asked, "Why don't you want the money?" Kuang Heng said, "I like reading. You only need to lend me some books." The rich man was surprised at his diligence (勤奋) and agreed to lend him books.
In the daytime, Kuang Heng had to work, so he could only read in the night. However, he was too poor to buy even a candle. How could he read in the dark night? He found that his neighbor lit (点燃) candles in the house, and he had a good idea. He dug a small hole on the wall so that he could use the light to read books. From that day, he read every night until the light went out.
Finally, Kuang Heng became a successful person with great knowledge.