荀攸
In 196, the warlord Cao Cao received and fetched Emperor Xian to Xu (許; present-day Xuchang, Henan) and established the new capital there. He wrote to Xun You: "The Empire is in chaos. It is time for intelligent people to do something. Do you not think you have spent too much time observing the changes in the Shu region?" Xun You was then appointed as the Administrator () of Runan Commandery (汝南郡; around present-day Gushi County, Henan) and later summoned to the capital to serve as a Master of Writing (). Cao Cao had long heard of Xun You and was overjoyed when they finally met. He told Xun Yu and Zhong Yao: "Gongda is no ordinary person. Now that I have him to advise me, why should I worry about not being able to pacify the Empire?" He also appointed Xun You as a Military Adviser ().