 He was able to hide his emotions well and project a calm and serious demeanour.However, the historian Pei Songzhi criticised Bu Zhi for supporting Sun Quan's fourth son Sun Ba in the succession struggle against Sun Quan's second heir apparent Sun He, and added that this incident left a huge stain on Bu Zhi's good reputation.Bu Zhi was from Huaiyin County (), Linhuai Commandery (), which is around present-day Huai'an, Jiangsu.