With the development of China in recent years, everything related to the word "Han" such as "Chinese characters", "China culture" and "Han people" seems to be closely related to China. In addition, South Korea used to be a subordinate country of China, and the name "Seoul" often hurts the hearts of some Koreans. I don't think my capital should be called "Seoul". I think this name is ambiguous, just as it belongs to China. So I made an excuse to change my name.
In fact, this mentality is understandable. The smaller a country is, the more it emphasizes national self-esteem, just as the poor suddenly become rich. This is not groundless. There was a period when nationalism prevailed in Korean history. 1970, men in primary and secondary school textbooks were completely abolished, and the restrictions on the use of Chinese characters were not lifted until 1999 nearly 30 years later.
However, although Koreans call the present capital Seoul, China people are still used to calling it Seoul. Some history cannot be erased simply by changing its name, and Seoul is the best example. Even though it is now called Seoul, many people still know that its predecessor was Seoul. In a word, the reason why South Korea changed its name is that national sentiment is "at work", hoping to get rid of the influence of Chinese characters and China culture, but their ideas are somewhat naive after all.