In the Northern Song Dynasty, he was the supervisor of Dushui Supervisory Committee of the Ministry of Industry. In the last years of Yuanyou, the old and new parties fought again, and the court was either one or the other. He was caught in the middle, not attached to the old or the new, but based on river engineering practices. Amidst the turbulent political tide and the more severe autumn floods, he walked alone on a dike as if walking on thin ice.
