The mysterious condemned prisoner escaped from prison for three times, invented a patent in prison, was exempted from the death penalty, and was hired with high salary. Who is he?

Li Hongtao, who likes the invention very much, has been studying brushless electric excitation motor outside since then. Being so obsessed with these inventions, they are often taken away without preparation. Because of too many crimes, the court finally sentenced him to death The warden felt that this man was a pity and wrote a letter to apply for probation. Finally, the relevant departments decided to waive his death sentence and commute his death sentence to a suspended sentence. Later, he was sentenced to fixed-term imprisonment for good behavior. 17 years later, he finally got out of prison. After he was released from prison, he was hired as a scientific research engineer. Later, he invented several patents, which can be regarded as a lot of contributions to the country.