The lives of early Koreans, just like the lives of all early people's was tied to agriculture. Many of the practices of the Koreans resembles that in China and Mongolia, due largely to the connected early histories of the nations.
A small grinding mill for a home, and and early "desk."
Villages were surrounded by walls and homes were primarily lit by what ever sun entered the home.
People's lives were simple. They farmed their fields, made their clothes and followed their religious/superstitious beliefs.