Why are South Korean slogans protesting against Japan written in Chinese characters? Are they meant for the Japanese or the Chinese?

Because China was the former suzerain country, it would scare little Japan to bring out Chinese characters. Seeing this Chinese character is like seeing the Holy One. Speaking of national sentiment, Koreans are actually very miserable. They have been a dependent country of China for thousands of years and do not have their own written language. Their so-called King Sejong finally invented Hangul, but the expression was very unclear and not as diverse and precise as Chinese characters. South Korea has always rejected Chinese characters since its independence, but its citizens demand the return of Chinese characters. Their history books are all in Chinese, so there is nothing they can do. On the one hand, they reject China, but on the other hand, they are attracted to ancient Chinese culture, especially that of the Ming Dynasty. Overall, they are miserable. This is similar to the Japanese. When you go to Korea or Japan, you think you are in ancient China.