However, the name Korea appeared much earlier. As recorded in Historical Records of Korea Biography, as early as the Zhou Wuwang period, Shang Zhouwang's uncle Ji Zi established a vassal state in Pyongyang, which was called "Korea" by Zhou Wuwang and "Jizi Korea" by history.
During the peasant uprising at the end of Qin Dynasty, Wei Man, a Yan man, came to Korea to be a doctor. At the beginning of the Han Dynasty, Wei Man usurped power and became king himself. The country name was still Korea, which was called "Wei's Korea" in history. After the defeat of the Korean king, he fled to Mahan in the south of the Korean peninsula. Wei's Korea existed for nearly 90 years before and after, and was destroyed by Emperor Wu of the Han Dynasty in 107 BC. In the Han Dynasty, the county ruled in the former site of Weishi Korea, creating a splendid "Le Lang culture".
Historical reference
1 The Story of the Three Kingdoms in Wei Zhi quoted Wei Lue as saying: "After Ji Zi, the Marquis of North Korea claimed to be the king, but his descendants were a little arrogant. Yan Nai sent Qin Kai to the west and took more than 2,000 miles of land. Until he was sweating, North Korea became weak."
2。 Textual research on the fifth volume of Shangshu: "North Korea, sealed by Kiko, should not be outside the country."
3 Book of Changes Notes: "Ji Zi fled to North Korea, and the prince of Wu and North Korea sealed the marquis. Because he helped the king of Wu with Hong Fan, no one knows that he is not crazy. "