administrator, Zhu Ran had the merit of subjugating the Shanyue ethnic group within his jurisdiction, and was able to do so in less than a month. However, when the warlord Cao Cao led his massive army to invade southern China, Zhu Ran stayed in the back just as most other officials at the time did; and was not assigned significant tasks for some time until the Battle of Ruxukou, where he proved his loyalty in personally going to the frontline to help resist Cao Cao's 400,000 strong army. Although Zhu Ran did not engage the enemy in this battle, he was promoted by Sun Quan to the rank of Major-General, as a way to reaffirm his trust in Zhu Ran. In 219, Zhu Ran participated in Lü Meng's Jing Province campaign as Lü Meng's aide. When the enemy commander, Guan Yu, was abandoned by his troops and trapped in Maicheng, Zhu Ran was ordered by Lü Meng to lay the first line of blockades to Guan Yu's escape. However, for reason unknown, Zhu Ran let Guan Yu slip by, and Pan Zhang, who was responsible for the second layer, succeeded in capturing Guan Yu alive. Regardless, Sun Quan credited both Pan Zhang and Zhu Ran for Guan Yu's capture. When Lü Meng laid on his death bed shortly after the Jing Province campaign, Sun Quan asked his input on who could succeed him as the new commander for the army, wherein Lü Meng highly praised the abilities of Zhu Ran and recommended the latter be the replacement. Heeding Lü Meng's dying words, Sun Quan gave the staff of authority to Zhu Ran, and tasked him with the defence of Jiangling County, the capital of Nan Commandery and a vital strategic stronghold on the frontline. Two years later, Liu Bei, the emperor of Shu Han, led a grand army of more than 100,000 troops to invade Wu, and Zhu Ran led his 5,000 troops to join the Wu commander, Lu Xun, for the tactical defence of Yiling and Xiaoting. When the next summer came, Zhu Ran led a separate force against Shu. After breaking Liu Bei's vanguard, Zhu Ran's forces took up a position at the rear of the Shu army, blocking their escape as they attempted to flee from a fire attack executed by Lu Xun. Together, Lu Xun and Zhu Ran pursued Liu Bei into the deep hills, pushing