李逢吉
By 817, the expenditures of the imperial forces in waging campaigns against Chengde and Zhangyi simultaneously were so high and the returns so low that Emperor Xianzong was reconsidering his strategy. Listening to the chancellor Li Fengji and other officials who advocated concentrating on defeating Zhangyi first, in summer 817, Emperor Xianzong ordered the circuits attacking Chengde to withdraw their forces back to their own circuits.