find out and felt very uneasy about it. Earlier on, Lü Bu had been warmly received by Wang Yun, the Minister over the Masses (司徒), so he went to see Wang and complained about how Dong Zhuo almost killed him. At the time, Wang Yun and another official, Shisun Rui (士孫瑞), were plotting to get rid of Dong Zhuo so they told Lü Bu about their plan and sought his help. Lü Bu said, "But we are father and son!" Wang Yun replied, "Your family name is Lü so you have no blood relations with him. He was not concerned about you at all when you almost died, so where was the father-son bond?" Lü Bu agreed to join them and personally killed Dong Zhuo later. After Dong Zhuo's death, Wang Yun and Lü Bu took charge of the central government. Lü Bu was appointed General of Vehement Might (奮威將軍) and received the honours equivalent to those received by the Three Ducal Ministers – three high-ranking officials in the Han administration. Emperor Xian also enfeoffed him as the Marquis of Wen (溫侯). Expulsion from Chang'an After Dong Zhuo's death, his followers in Liang Province, led by Li Jue, Guo Si and others, formed an army to attack Chang'an when Wang Yun refused to grant them amnesty for their past activities under Dong Zhuo. Guo Si led his men to attack the city's north gate, where he met Lü Bu, who told him, "Let's not send our soldiers into battle. Instead, let's have a man-on-man fight." Lü Bu then engaged Guo Si in a duel and injured him. Guo Si's men saved their superior. Both sides withdrew their forces. Lü Bu was unable to resist the enemy so he eventually abandoned Chang'an and fled. His defeat and subsequent flight took place 60 days after Dong Zhuo's death. Pei Songzhi commented that the "60 days" claim in the original text of the Sanguozhi was erroneous. According to other sources, Lü Bu killed Dong Zhuo on the 23rd day of the fourth month in the third year of the Chuping era (190–193) in Emperor Xian's reign, and he fled from Chang'an on the first day of the sixth month. There were no interpolated dates in between, so Lü Bu could not have spent 60 days in Chang'an after Dong Zhuo's death. Seeking shelter under Yuan Shu After leaving Chang'an, Lü Bu, accompanied by