Deng Zhi
Despite his positive traits, Deng Zhi was known for being arrogant and condescending. Many of his colleagues, including his superior Fei Yi, tended to give in to him. However, there was one Zong Yu who stood up to Deng Zhi. In 243, when Deng Zhi returned to the Shu capital Chengdu from his previous post at Jiangzhou to serve as General of Chariots and Cavalry, he met Zong Yu and asked him: "According to the rules of propriety, a man in his 60s should no longer serve in the military. Why do you still want to receive command of troops at this age?" Zong Yu rebuked him: "You are already in your 70s but you haven't relinquished your command of troops. So why can't I receive command of troops when I am in my 60s?"