Pan Jun (died 239), courtesy name Chengming, was a minister and military general of the state of Eastern Wu during the Three Kingdoms period of China. Originally a minor official serving under the warlords Liu Biao and later Liu Bei in Jing Province, Pan Jun reluctantly switched allegiance to another warlord Sun Quan after Sun Quan seized control of Liu Bei's territories in Jing Province in 220. While serving under Sun Quan, Pan Jun held military commands and quelled a rebellion. After Sun Quan became emperor in 229, he appointed Pan Jun as Minister Steward and later Minister of Ceremonies. During this time, Pan Jun joined the general Lü Dai in suppressing a rebellion by indigenous tribes in his native Wuling Commandery (around present-day Changde, Hunan). He also oversaw civil and military affairs in Wuchang (present-day Ezhou, Hubei) alongside the general Lu Xun. In the 230s, he repeatedly spoke up against Lü Yi's abuses of power and even planned to assassinate him. Throughout his life, Pan Jun was known for being a man of bold character and an honest official who strictly and fairly upheld the law without fearing how others would see him. Early life and career Pan Jun was born in Hanshou County (), Wuling Commandery (), which is located northeast of present-day Changde, Hunan, towards the end of the Eastern Han dynasty. After he reached adulthood around the age of 20, he studied under the tutelage of the scholar Song Zhong (宋忠; also known as Song Zhongzi 宋仲子). He was known for being intelligent, observant, and capable of providing well-thought and well-reasoned responses to questions. Wang Can, one of the "Seven Scholars of Jian'an", once said that Pan Jun was an extraordinary talent. After receiving such high praise from a famous intellectual like Wang Can, Pan Jun became more well known in his home commandery. The Administrator of Wuling Commandery appointed him as an Officer of Merit () to serve in the commandery office. Before Pan Jun reached the age of 29, Liu Biao, the Governor of Jing Province (covering present-day Hubei and Hunan), recruited him to serve as an Assistant Officer () in Jiangxia Commandery (江夏郡; around present-day Xinzhou District, Wuhan, Hubei). At the time, the Chief of Shaxian County (沙羨縣; around present-day Wuchang District, Wuhan, Hubei), which was under Jiangxia Commandery, was notorious for his corruption. Pan Jun conducted an investigation, found him guilty of