Gu Yong
Gu Yong was known for his abstinence from alcohol and for being a reserved and quiet person. He also maintained proper conduct and behaviour all the time, even in casual and informal settings. Sun Quan once said: "Although Gu Yong doesn't talk much, he is spot on when he speaks." Whenever Gu Yong attended festive celebrations, he was usually a spoilsport because his mere presence often made his colleagues feel uneasy. They were worried that he would see them in their non-sober states, so they tended to exercise greater self-control while enjoying themselves. Sun Quan even once remarked: "When Gu Yong is around, no one will have fun."