1. Bao Ying night reading: Che Yin, a native of Jin Dynasty, is cautious, hardworking, knowledgeable and proficient in learning. Che Yin's family is very poor, so he can't get lamp oil often. On summer nights, Che Yin made a bag with white silk, which was filled with dozens of fireflies, and studied it from night to day.

2. Thorn on the beam: In the Eastern Han Dynasty, there was a young man named Sun Jing who was diligent and studious. He studies behind closed doors from morning till night, with little rest. Sometimes he falls asleep easily in the middle of the night. In order not to affect his study, Sun Jing thought of a way. He found a rope, one end tied to his hair and the other end tied to the beam of the house, so that when he was tired of reading and dozed off, the rope would be pulled.

3. Steal light by poaching: In the Western Han Dynasty, there was a young man named Kuang Heng. He likes reading very much, but because his family is poor, he doesn't have enough to eat, let alone pay for school. Kuang Heng likes reading since he was a child, and he is smart and sensible. But he has to help the workers during the day and can only study at night. But the family is too poor to buy lamp oil. What shall we do? During the busy farming season, Kuang Heng worked as a short-term worker for wealthy families and asked them to lend him books for free.

The above story tells us that only by being diligent can we succeed.