Can Koreans understand traditional China?

King Sejong of Korea invented Korean in 1443 (the 25th year of Sejong), and it has become a proverb ever since. 1446 (in the 28th year of Sejong), King Sejong announced that the pronunciation was the language used by the people on the Korean Peninsula. Korean used to be used in Korea, but they are all traditional Chinese characters! Therefore, traditional Chinese characters have been used until now and still appear in Korean newspapers in large numbers. Most calligraphy lovers also use traditional Chinese characters, which is similar to China's calligraphy. Now the traditional meaning words in Korean are similar to those in Chinese, but their pronunciations are quite different. Koreans can understand the meaning of commonly used traditional Chinese characters and speak Korean pronunciation, but they can't pronounce China. Koreans who have studied Chinese have studied simplified Chinese characters in China, and they also need to compare simplified Chinese characters with traditional Chinese characters to understand them.