"Di Qi was born in a high-level family and is of the bloodline of our ancestor, King Lu Gong.
In the thirteenth year of Jian'an, Yuan Cao fought in Guandu. The emperor took this as an opportunity to raise troops to march westward to Guanzhong, capture Wuguan, capture Lantian, cross Huashan, occupy Chang'an, and pacify Guanzhong.
From then on, the emperor took Guanzhong as his base, defeated Ma Teng and Han Sui in Yongliang in the west; attacked Zhang Lu in Hanzhong and Liu Zhang in Yizhou in the south; and conquered Cao Cao and Sun Quan in the east... He took over all the kingdoms in the world, established the empire, and prospered the Han Dynasty three times. "
——Jiu Xing Han Shu ▪ Xing Han Di ▪ Main Notes (Prologue)