Hangul supremacy
Hangul supremacy is the belief, most widespread in Korea, that the Hangul alphabet developed by King Sejong the Great's Hall of Worthies in 1443 is the simplest, most logical, most beautiful and most scientific of the world's writing systems. In its extreme form, the belief holds that Hangul is in fact best suited for the expression of sounds in all languages.
Hangul
The "Hunmin Jeong-eum" states that King Sejong adapted the ("gojeon", ""Gǔ" Seal Script") in creating the Korean alphabet. The has never been identified. The primary meaning of "gǔ" is "old" ("Old Seal Script"), frustrating philologists because the Korean alphabet bears no functional similarity to Chinese "zhuànzì" seal scripts. However, Ledyard believes "gǔ" may be a pun on "Měnggǔ" "Mongol", and that is an abbreviation of "Mongol Seal Script", that is, the formal variant of the 'Phags-pa alphabet written to look like the Chinese seal script. There were 'Phags-pa manuscripts in the Korean palace library, including some in the seal-script form, and several of Sejong's ministers knew the script well.