It's true. Leo Chou is good at quick calculation. He can give quick and accurate answers to the high-power operation of natural numbers, multiplication of two digits, three digits and four digits, square root of high digits, square root, arithmetic progression and cyclic decimal. Behind the perfect presentation of Super Brain, this talented mathematical wizard has an embarrassing growth history. According to the reporter's interview, Leo Chou was born completely healthy. When he was six months old, he was accidentally hit by a pillow and was afraid. Then his body became abnormal. His parents took him to a big city for diagnosis. Unexpectedly, he was diagnosed with intractable hypoglycemia and mental retardation. However, at the age of nine, his illness miraculously healed itself. But his appearance became more and more strange, and he was laughed at by many villagers. I found that this child is very sensitive to numbers, because one day, his mother accidentally took Leo Chou to work in the fields. People jokingly asked, "One donkey has four legs, and how many legs do two donkeys have?" "Eight legs", I didn't expect Leo Chou to give the answer soon, but people found that he could also do arithmetic. From then on, my mother rekindled hope and let Leo Chou go to school. However, all the schools in the village refused to accept Leo Chou's smart and dull appearance, so there was nothing they could do. Finally, Leo Chou can only become a fifth-grade auditor. 10 years old, I know arithmetic in grade one and grade three. When he finished primary school and wanted to go to middle school, he was discriminated against by his classmates at school because of his age, and finally he had to drop out of school because of the environment and people's ideas. Since then, he has been helping in the grocery store at home. Leo Chou is usually taciturn, but he especially likes books about mathematics, and he likes to do arithmetic with a calculator, so all his mathematical talents are touched and awakened during these times.