Li Hongtao, he likes to invent very much, and later he has been studying brushless electric excitation motors outside. Because he is too obsessed with these inventions, he is often arrested when he is not prepared, because his crimes are too serious. Many, the court finally sentenced him to death. The warden felt very sorry for this man, so he wrote a letter of application for probation. In the end, the relevant departments decided to exempt him from the death penalty and commuted the death penalty to a suspended death sentence. Later, he was sentenced to a fixed-term prison sentence because of his good behavior. After seventeen years, he was released after serving his sentence. After he was released from prison, he was hired as a technology research and development engineer, and later invented several patents, which can be regarded as making a lot of contributions to the country.