In the name of honesty, he is diligent in politics and trusts Dugu and Qin Zhou, the governors of Longyou. In the past, officials neglected political affairs, and many people's sufferings were not satisfied, which led to boiling public grievances. After Du took office, there was no backlog of official duties. He educated the people with etiquette and encouraged them to farm and raise silkworms. After a few years, both public and private became rich. People who had been displaced before also returned to their hometown in succession, and the whole place, because its name is honest and widely known, gave it a name called "Xin".