Kanji (感じ（かんじ) , Hanmoon (한문), and Hanzi (Chinese Characters Used in China), Part 30 – American in Korea

I saw this yesterday –

We are talking about basic kanji, hanmoon, or hanzi and then adding something to them to make a more complicated character. The next character, I learned in my very first Japanese class. When it was made, it used to look like an eye, but with time, for convenience of writing, they began squaring it off. Rather than the rounded lines you use when you draw an eye, they began just making straight lines so they could write it quickly.

https://americankorea.blog/2021/04/18/kanji-%E6%84%9F%E3%81%98%EF%BC%88%E3%81%8B%E3%82%93%E3%81%98-hanmoon-%ED%95%9C%EB%AC%B8-and-hanzi-chinese-characters-used-in-china-part-30/