Chen Shou, the compiler of the "Records of the Three Kingdoms", hailed from Shu Han and became an official of the Western Jin dynasty when he was working on the "Records". As Western Jin succeeded Cao Wei, Chen was careful in his compilation to imply Cao Wei was the legitimate state. Despite the description of events being mostly balanced and fair, Chen Shou legitimized Wei by placing the Wei annals first, using the era names from Wei's calendar, and reserving regal nomenclature for the leaders of Wei. Specifically, emperors of Cao Wei are referred to by their imperial posthumous names (eg. Cao Pi is referred to as the "Civil Emperor" 文帝), while the Shu and Wu emperors are mere "rulers" (eg. Liu Bei is referred to as the "First Ruler" 先主 and Sun Quan as "Ruler of Wu" 吳主). Chen Shou, as a subject of Jin, could not write in a way that implies Jin as illegitimate by denying Cao Wei's claim to the mandate, despite what sympathies he might have had toward his home state of Shu.