When King Sejong of the Joseon Dynasty (1392-1910) created “Hunminjeongeum,” the Korean alphabet now known as Hangeul, in 1443, it did not immediately replace the Chinese characters which Koreans had used for centuries. For centuries afterward, it was largely shunned by the dynasty's aristocrats and intellectuals, who favored the use of Chinese characters. It wasn't widely popular among ordinary citizens either. A major change came in 1894, when King Gojong declared Hangeul as the country’s official writing system. Three decades later, in December 1926, a group of Korean linguists and independence activists gathered and proclaimed Gagya Day — at the time, the name of Hangeul was not widely known and “gagya” was the starting sounds of people learning the alphabet. That marked the beginning of what would later become Hangeul Day, which this year reaches its 100th anniversary. It was set on Sept. 29 based on the lunar calendar and was moved to the current Oct. 9 in 1940. Historical legacy of Hangeul Day Establishing Gagya Day a century ago was part of a cultural independence move