1, Cao Cao cut his hair. During the Three Kingdoms period, Cao Cao led an army to fight, and his horse trampled the crops in the farmland during the March. According to the military discipline, Cao Cao did not hide his fault, cut his hair in public and told the soldiers of the three armed forces that he was respected by the soldiers.
Zhang Guanghou failed to enter junior high school because he was not good at arithmetic when he was a child. Hua failed the math exam in junior high school, but they all became outstanding mathematicians.
Darwin's academic performance in childhood is far behind that of his sister. In the eyes of his teachers and father, he is a very mediocre child, even below the average intelligence level. But he insisted on field observation and indoor research with amazing perseverance, and eventually became a world-famous biologist.
Bian Que was a great physician in China 2400 years ago. He has never been to school. When he was young, he worked as a handyman in a guest house to make ends meet. Later, he met a good folk doctor, accepted him as a teacher and determined to be a famous doctor in the future. So he studied hard and repeatedly. After 10 years of diligent study and practice, he not only mastered all the knowledge accumulated by teachers, but also made new creations and developments. So he became a famous doctor in various countries during the Warring States Period.
Marx is a great mentor of proletarian revolution all over the world. In order to uncover the secret of capitalist exploitation of workers, he insisted on studying in the British Museum every day, consulting materials for a long time and reading a lot. As a result, he left two rows of trenches on the concrete floor where he often worked.