Dongmyeongseong was the first ruler of Goguryeo. He moved south from the kingdom of Buyeo and settled in a new country called Goguryeo, which he went on to expand. THere is a myth about this king: his mother was from a mermaid family and that he hatched from an egg and can communicate with sea anmials. The Korean language (íêµì´ or ì¡°ì ì´, see below) is the most widely used language in Korea, and is the official language of both North and South Korea. ... Hangul (hangul: íê¸; revised: hangeul; McCune-Reischauer: hangÅl) is the native alphabet used to write the Korean language, as opposed to the Hanja system borrowed from China. ... Hanja (hangul: íì; hanja: æ¼¢å; revised: hanja; McCune-Reischauer: hancha; lit. ... The Revised Romanization of Korean is the official Korean language romanization system in South Korea. ... McCune-Reischauer is one of the two most widely used Korean language romanization systems, along with the Revised Romanization of Korean, which replaced (a modified) McCune-Reischauer as the official romanization system in South Korea in 2000. ... Goguryeo (37 BC-668) was an empire in Manchuria and northern Korea. ... Buyeo can mean: An ancient kingdom in Manchuria, also called Puyŏ or Fuyu. ...