[1] Leaving his home, he was early follower and trusted aide, he would often oversee the supply lines and was entrusted with implementing the key tuntian farming system.
[4] In 189, the general Dong Zhuo took advantage of the power vacuum, created in the aftermath of the conflict between the regent He Jin and the eunuch faction, to seize control of the Han central government.
[6] Ren Jun advised him to stay and urged him to take the lead in calling for everyone to rise up against Dong Zhuo and overthrow him.
[8][9] while Zhu Jun held the official title[10] and Yang Yuan's control was limited to the eastern part of Henan.
[16][17][18] During the early stage of the civil war, famine was rampant and warlords struggled to maintain consistent supply to their armies.
After Yuan Shao's forces attacked Cao Cao's supply trains on a number of occasions, Ren Jun organised the supply trains into groups of 1,000 wagons and arranged for them to travel along several different routes heavily protected by camps and pickets.
[30] After his coronation, Cao Pi awarded Ren Jun the posthumous title "Marquis Cheng" (成侯) to honour him for his contributions.
During times of famine, Ren Jun provided much assistance to his friends, acquaintances and distant relatives and did not hesitate to use his personal wealth to help the needy and poor.
[33] Chen Shou in his appraisal of the figures in the volume of biographies that Ren Jun's is contained in, put Ren Jun in a list of exceptional administrators[34] and one of the famed administrators of his generation in Wei,[35] noted his early following of Cao Cao and agricultural development that filled the granaries.