李德裕
In 822, Li Deyu was himself made a "Zhongshu Sheren", and continued to serve as imperial scholar. He was considered a possible chancellor candidate, as well as Niu. In 823, Emperor Muzong made a chancellor, while Li Deyu was sent out of Chang'an to serve as the governor (觀察使, "Guanchashi") of Zhexi Circuit (浙西, headquartered in modern Zhenjiang, Jiangsu). Li Deyu believed that this was the machination by then-chancellor Li Fengji to squeeze him out so that Niu could be made chancellor, and thereafter resented Niu and Li Fengji even more.