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.
History of Sino-Korean relations
The Chinese character system, known as Hanja in Korean, was introduced into Korea through the spread of Buddhism during the Tang Dynasty. Hanja was used as the sole means of writing Korean until Sejong the Great promoted the invention of Hangul during the 15th century.