After taking a few months to recover, Cao Cao turned his attention to Yuan Shu, who had recently proclaimed himself emperor of his new Zhong dynasty. In the name of restoring the Han dynasty, Cao Cao and other warlords formed a coalition against Yuan Shu, and Cao Cao seized all Yuan Shu's holdings north of the Huai River in the autumn of 197, while the latter's remaining territory suffered drought and a bad harvest, further decreasing his power.
