Pythagoras, a mathematician, thinks that there are only integers and fractions in the world, and nothing else. But a question soon appeared: When the side length of a square is 1, what is the diagonal length m? Is it integer or fraction? Pythagoras and his disciples worked very hard and didn't know what this M was. Are there any other numbers in the world besides integers and fractions? This question aroused the interest of Hebers, a member of the school. He spent a lot of time studying it. Finally, Herbers asserted that m was neither an integer nor a fraction, but a new number that people didn't know at that time. From Herbers's discovery, people know that besides integers and fractions, there is a new number, that is, a new number. What should be the name of the newly discovered number? At that time, people thought that integers and fractions were easy to understand, so they were collectively called "rational numbers", while the new numbers discovered by Herbers were not easy to understand, so they were named "irrational numbers". Herb's discovery overthrew the Pythagorean school's theory, shook the foundation of this school and caused their panic. In order to maintain the prestige of the school, they strictly blocked Herbers's discovery. Anyone who dares to leak out will be sentenced to death-buried alive. However, the truth cannot be blocked. Although the Pythagorean school has strict rules, the discovery of Hiberus is known to many people. They found the leaker and found that it was none other than Siberus himself! This is not bad! Hiberus betrayed his teacher and his own school. According to the regulations, Pythagoras wanted to bury Siberus alive. Hiberus heard the wind and ran away. Siberus wandered abroad for several years, and he secretly returned to Greece because he missed his hometown. On a ship in the Mediterranean, the faithful of Pythagoras discovered Hebrus, and they cruelly threw him into the Mediterranean.

Later known as the father of irrational numbers, it laid the foundation for irrational numbers.