In May 2021，many people saw a man with buns（馒头） and a bottle of water online for the first time.1 man is a math teacher at Peking University （北京大学）.His full name is Wei Dongyi.Chinese people like to call him "Wei Shen" because he is really good2 math.
Wei Dongyi said there were3 books about math at his home.When he was a child，he4 reading books very much.He5 a book named "Hua Luogeng Math School" at the age of 7. He6 find the book interesting at first，because it was just about some difficult math problems.7 after he solved the first problem，he found math interesting and fell in love with it from then on.Later，8 studied math very hard.
9 July 21，2008，Wei Dongyi，a high school student from Shandong，won the first prize at an international（国际的） math competition（比赛） with a perfect score.The students taking part in the competition had to answer three difficult questions in four and a half hours.Wei Dongyi got full marks for10 all three questions right.
Wei Dongyi's success is not only related（相关的） to his math thinking，but also to his hard work.
