Du Guoying, a man who drives a tractor to collect taxes forever, was born in 1973. When he was young, he was a teacher. He started his business in 1992 and made 50W by selling glasses. However, it is obviously a waste of his talent to work. In 1997, the former teacher of the people came to his mother and many hunchback students with the first IQ tax product "back and back".