Historical Records of Song Weizi Family: King Wu named Ji Zi as Korea. This is the earliest record of the word Korea. Ji Zi is Shang Zhouwang's uncle. After King Wu destroyed the commerce, Kiko crossed the sea to Korea and established the Korean ji zi. It can be seen that the word "Korea" existed in the early years of the Western Zhou Dynasty, with a history of more than 3,000 years. Korea has gone through four historical periods: Jizi Korea, Wei Man Korea, Han Sijun and Koguryo, while South Korea has three Koreas coexisting.

In the southern part of the Korean peninsula, from the 4th century BC to the 2nd century BC, there were three small tribes, namely Mahan, Chen Han and Han Ge, collectively known as the "Three Hans". Mahan was the largest of the three Koreas and was later unified by Baekje. In 57 BC, Chen Han developed into Silla. Han Ge developed into Jiadi and was annexed by Silla in the 6th century. In 9 18, Wang Jian, the founder of post-Koguryo, was proclaimed king by his subordinates, moved to his hometown of Kaesong, and changed his name to "Korea". In 935, Silla was destroyed; In 936, Baekje was destroyed and the Koryo Dynasty was established.

1388, King Koryo sent Li Chenggui to attack Liaodong, while Li Chenggui staged a coup. 1392, King Koryo was deposed, became king on his own, changed his name to Koryo, and made its capital in Hanyang (now Seoul, South Korea), which was known as the Koryo Dynasty in history. The title of Li Dynasty was given by Mao, the emperor of Ming Dynasty. In order to win the support of the Ming Dynasty, Li Chenggui sent envoys to the Ming Dynasty. Emperor Zhu Yuanzhang of the Ming Dynasty took the meaning of "brilliant morning sun" and gave it the title of "Korea", which was called "Korea Dynasty" in history.

The origin of the name of North Korea is recorded in the official geography of the Lee Dynasty of North Korea, "The View of the East Country": the country is in the East and was first honored by Asahi, hence the name of North Korea. 16 18, the Ming Dynasty fought against the late Jin Dynasty, and North Korea sent troops to help the Ming Dynasty. 1623, an internal coup took place in North Korea, which deposed King Li Hui without authorization. Yuan Keli, governor of Daming Denglai, strongly advocated that "China should be more stable". 1636, the late Jin captured the whole territory of Korea, and South Korean King CoCo Lee surrendered and paid tribute to the late Jin, becoming a vassal state of the Qing Dynasty.

1895 In April, the Qing Dynasty was defeated in the Sino-Japanese Sino-Japanese War of 1894-1895, and the treaty of shimonoseki was signed. The Korean government under Japanese control announced the termination of its suzerain-vassal relationship with the Qing Dynasty. 1896, with the support of Russia, Emperor Gaozong of Korea was "upgraded" to the Korean Empire, and since then, Lee's Korea has changed its name to "Korea".