غجا جوسون
Borrowing from the Japanese theory of nation, Shin Chaeho located the martial roots of the Korean in Goguryeo, which he depicted as militarist and expansionist which turned out to inspire pride and confidence in the resistance against the Japanese. In order to establish Korean uniqueness, he also replaced the story of Gija Joseon, whose founder (Gija) was the paternal uncle or brother of the Chinese Shang emperor Zhou, with the Dangun legend and asserted that it was an important way to establish Korea's uniqueness.