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How to draw a handwritten newspaper by mathematician Hua
Mathematician Hua's How to Draw a Manuscript is as follows:

Hua-a great mathematician in a small grocery store.

Hua was born in a poor family when he was a teenager. After graduating from junior high school, he dropped out of school to help his father look after the grocery store. However, he became interested in mathematics. He is often fascinated by reading books and forgets to receive guests who come to the store to buy things. Sadly, he only borrowed big algebra, analytic geometry and 50 pages of calculus from his teacher.

However, relying on tenacious perseverance and love of mathematics, Hua became a self-taught student, came to Tsinghua campus from a small town in the south of the Yangtze River, and then went abroad to study at Cambridge University in England. He eventually became a generation of mathematicians and was known as "the father of modern mathematics in China".

He is the founder of China's analytic number theory, the most influential mathematician in China, and listed as one of the 88 great mathematicians in the world by the Chicago Museum of Science and Technology.

Mathematician Hua's short story: When he was fourteen years old, once, the math teacher Wang Weike gave the students such a question in class: "I don't know today's number, 3322, 5522, 7722. What is the geometry of things? "

This problem is a problem in the ancient Shu Jing. As soon as Teacher Wang finished reading the question, Hua blurted out the answer: "Twenty-three!" The teacher was surprised and asked him if he had read the book The Art of War. How is it worked out? "

Hua A: I haven't seen it! I think so, too. Three digits equals three digits, two more digits, seven digits equals seven digits, two more digits, and the rest are all two digits. Then, the total may be three times seven plus two, which equals twenty-three. When twenty-three is divided by five, the remainder is exactly three. Therefore, 23 is an ideal number. The teacher was surprised and sighed again and again: "What a coincidence, it's 23! "