At the beginning of the rule of Shu, improving the tense relationship with Soochow became a top priority. Zhuge Liang sent Deng Zhi as an envoy to Soochow. He used emotion and reason to successfully persuade Sun Quan to sever the vassal relationship with the Cao Wei regime and instead become an ally with Shu Han..In 229 AD, Sun Quan proclaimed himself emperor. Zhuge Liang considered the overall situation, assessed the situation, and said...