Taejo of Joseon

Taejo (Korean: 태조; Hanja: 太祖; 4 November 1335 – 27 June 1408), personal name Yi Sŏnggye, later changed to Yi Tan, was the founder and first monarch of Joseon. He ascended to the throne in 1392 after overthrowing the Goryeo regime, but abdicated just six years later during a strife between his sons. Following the establishment of the Korean Empire, he was honored as Emperor Ko.

Taejo emphasized continuity over change. No new institutions were created, and no massive purges occurred during his reign. His new dynasty was largely dominated by the same ruling families and officials that had served the previous regime. He re-established amicable ties with Japan and improved relations with Ming China.

Source: Wikipedia — https://en.wikipedia.org/wiki/Taejo_of_Joseon