1 century later, three feudal countries, Koguryo, Baekje and Silla, appeared on the Korean peninsula.

In the middle of the 7th century, Silla unified Korea.

In 9 18, Wang Jian of korean king was named Korea with its capital in Song Yue.

1392, the three armies of Korea made Li Chenggui abolish the 34th king of Korea, calling himself king, and changed the name of the country to Korea, which has been in use ever since.