	Wei, seeing that Eastern Han was gradually unifying the empire, inexplicably began considering independence. He tried to persuade Dou to enter into an alliance with him to resist Eastern Han; Dou refused. When Eastern Han started considering conquering Chengjia, Wei, apprehensive of the implications of Chengjia's fall, tried to persuade Emperor Guangwu not to carry out a campaign against Chengjia, and later refused to lead his forces south against Chengjia.