A mathematical wizard-Naipur, do you remember the four great inventions? They are Indo-Arabic notation, decimal fraction, logarithm and computer. Logarithm was invented by Naipur in17th century. 1550 was born in Edinburgh, the capital of Scotland. He liked mathematics and science since he was a child, and was recorded in the history of mathematics with his four great achievements of genius. The invention of logarithm made the whole of Europe boil. Laplace believes that "the discovery of logarithm prolongs the life of astronomers by saving labor." It can be said that the discovery of logarithm has advanced modernization by at least 200 years. Next, I will tell you two short stories about him: once, he claimed that his black-haired penis could prove to him: which of his servants stole from him. Servants were sent to the darkroom one by one to pat the cock on the back. The servants didn't know that Naipur painted the cock's back smoky black. The servant who felt guilty was afraid to be next to the rooster and came back with clean hands. On another occasion, Naipur was upset because his neighbor's pigeons ate his food. He threatened to confiscate some pigeons if his neighbors didn't restrict them from flying around. Neighbors thought it was impossible to catch his pigeon, so they told Naipur that if he could catch it, he would do it. The next day, the neighbor was surprised to see his pigeon swaying on the lawn in Naipur. Naipur calmly put them in a big bag. It turned out that Naipur sprinkled some peas soaked in brandy on his lawn, which made these pigeons drunk.