Why did many Korean scholars continue writing in Chinese after Hangul was created?

Even after the creation of Hangul in 1443, Korean scholars and the elite class continued to use Chinese characters (Hanja) as their primary writing system for approximately 500 years. This persistence was driven by several deeply rooted cultural and political factors:1

• Confucian Influence: The Joseon dynasty officially adopted Confucianism as its governing ideology. Because the Confucian Classics and Chinese histories were written in Chinese, mastery of the language was essential for the educated elite.23
• Civil Service Examinations: Access to public office and political power was determined by civil service examinations, which required a deep knowledge of Chinese literature and philosophy. For the yangban (the hereditary aristocratic class), writing in Chinese was a professional and social necessity.24
• Cultural Prestige: Chinese had been the official literary language in Korea since the Three Kingdoms period. Consequently, it was deeply embedded in the intellectual tradition, and Hangul was not widely adopted by the upper classes until after 1945.523