Jungin were the lifeblood of the Korean Confucian agrarian bureaucracy, on whom the upper classes depended on to maintain their vice-like hold on the people.

The highest-ranking jungin, local functionaries, administratively enabled the yangban to oppress the lower classes, especially the total control they had over the sangmin.

Although inferior to the aristocracy in social standing, the highly educated jungin enjoyed far more privileges and influence than the lower middle and working class commoners.

Despite their differences, development of The Songsogwon Poetry Society led to a closer interaction between the yangban and jungin societal classes.

A notable Sijo author during the Joseon dynasty, Kim Cheon Taek, was a Pogyo constable during the reign of King Sukjong.

Kim was a highly skilled singer with great knowledge in arts who touched the nation's people to tears with his singing.

Kim knew this because of the social stratification in the Joseon Dynasty, and settled to live amongst what nature had to offer most jungin people.

- Kim Cheon Taek Jungin were prominent especially in the late nineteenth and early twentieth centuries when they tended to welcome Western institutions and ideas for modernizing Korea.