Thanks to his hard work, his knowledge has gradually increased. At that time, Yuan Shao's soldiers were very cruel. They dug up the grave and exposed the bones. Cui Yan persuaded Yuan Shao not to do this. Yuan Shao thought that he was right and named him Riding Commandant. Later, Cui Yan followed Cao Cao and gave him many ideas. When he was a history book, Cao Cao wanted to make Cao Zhi an heir, but Cui Yan objected. He said, "The rule since ancient times is to make the eldest son. How can you make Cao Zhi?" Cao Zhi is Cui Yan's nephew. Although he is a relative, he is not partial. Cao Cao admires his justice very much. Cui Yan has a cousin named Cui Lin. When he was young, he was neither successful nor unknown. His relatives and friends looked down on him, but Cui Yan valued him very much. Cui Yan often said to people: "It takes a long time for a talented person to become a great instrument, and Cui Lin will surely become a great instrument in the future." Later, Cui Lin really became the main book of Wing State, and Cheng in the suggestion, and also worked as a commonplace under Wei Wendi.
Story 2: In the Eastern Han Dynasty, a man named Ma Yuan 12 lost his parents and was raised by his brother. Ma Yuan teenagers are ambitious, but they are not smart by nature. At that time, there was a man named Zhu Bo in the same village, who was about the same age as Ma Yuan, but he could recite the Book of Songs and the Book of History. Seeing this, Ma Yuan felt ashamed, so he asked his brother to go to the frontier to graze. The elder brother knows his younger brother very well. He comforted his younger brother and said, "You are a very talented person. As long as you work hard and overcome your inferiority complex, you will succeed after a long time." After hearing this, Ma Yuan studied hard and persevered, and was finally named General Fubo at the age of 55. In the process of the establishment of the Eastern Han Dynasty, Ma Yuan repeatedly made outstanding achievements and became a famous "late bloomer".