غجا جوسون
In the 12th century BC, Gija, a prince from the Shang dynasty of China, purportedly founded Gija Joseon. In pre-modern Korea, Gija represented the authenticating presence of Chinese civilization, and until the 12th century, Koreans commonly believed that Dangun bestowed upon Korea its people and basic culture, while Gija gave Korea its high culture—and presumably, standing as a legitimate civilisation. However, due to contradicting historical and archaeological evidence, its existence was challenged in the 20th century, and today no longer forms the mainstream understanding of this period.