At the age of 28, Beethoven's hearing began to decline due to illness. By the age of 48, he couldn't hear any beautiful songs. He can only communicate with others through writing.

Even so, Beethoven continued to write. His immortal masterpiece, the last seven of the nine symphonies, was written while deaf. Among them, the third, fifth, sixth and ninth symphonies are considered as eternal masterpieces.

He feels human, society and nature with keen observation. In order to draft a piece of music, it often takes him months or even years to deliberate and temper it carefully. For example, he spent eight years composing the fifth symphony.

2. Su Qin

Su Qin in the Warring States period, although ambitious, went to many places because of his shallow knowledge, and was not reused in the end. Later, he made up his mind to study hard Sometimes I'm really tired, and when I'm ready to take a nap, I prick my thigh with an awl, and my blood is bleeding.

He used this special method of "stabbing stocks" to drive away drowsiness, cheer up and keep on studying. Huang Tian pays off, and later he finally became a famous politician.

3. Zhang Haidi

At the age of five, Zhang Haidi suffered from spinal hemangioma and paraplegia. At the age of fifteen, he was sent to a poor village in Shen County, Liaocheng with his parents. In order to learn medical knowledge, he overcame all kinds of difficulties brought by disability. He has edited books such as Questioning Life and Dreams in Wheelchairs. Among them, Dreams in Wheelchairs was published in Japan and South Korea.

4. Hua

After graduating from junior high school, Hua went to Shanghai China Vocational School, but dropped out of school because of tuition, so he only had a junior high school diploma for life.

After that, he began to teach himself tenaciously and completed all the math courses in high school and junior college in five years. 1928, he was unfortunately infected with typhoid fever, and survived under the care of his wife, but his left leg was disabled. At the age of 20, he caused a sensation in the field of mathematics with a paper and was invited to work by Tsinghua University.

From 193 1, Hua worked and studied in Tsinghua University, and completed all the courses in the Department of Mathematics in one and a half years. He taught himself English, French and German, and published many papers in foreign magazines.

1In the summer of 936, Hua was sent to Cambridge University in England for further study, and published more than ten papers in two years, which was appreciated by the international mathematics community. 1938, China visited Britain and returned to China. In a small attic like a cowshed on the outskirts of Kunming, he struggled to write a book called "The Theory of Prime Numbers in Piling Bases".

5. Song Lian

Song Lian liked reading when he was a child, but his family was poor and he had no money to buy books, so he had to borrow them from others. Every time he borrows a book, he agrees on a deadline, returns it on time, and never breaks the contract. People are willing to lend them to him. Once he borrowed a book, and the more he read it, the more he couldn't put it down, so he decided to copy it. But the deadline for returning the book was coming, so he had to copy the book overnight.