Ancient Korean painting

I am interested in looking and drawing war painting. Unfortunately, Korea doesn't have enough record about war.

This painting is done in Goguryeo period.

Goguryeo or Koguryo was an ancient kingdom located in southern Manchuria, southern Russian Maritime province, and the northern and central parts of the Korean peninsula.

I like the way painter simplified hunters' figures. I cannot feel how active they were but what painter's attitude towards ancient life is.