If we focus on countries' languages, there are a few countries to have their own language. Most countries use English as their native tongue, and Spanish is also used in most countries of South America. Korean nations should be proud that they have their own scientific language, Hangul. Hangul was proclaimed during Joeson Dynasty by King Sejong. Sejong put his effort to create a new language that is easy to learn.

In addition, Sejong contributed his effort in order to develop science technology in Korea. Jang Yeongshill, one of the most famous scientists in Joeson Dynasty gave his all life to help King Sejong to achieve his dream. As a result, he invented sundial, water clock, rain gauge, and celestial sphere. The most important thing to rember is that he tried his best despite the fact that he was involved in the lowest class in the social status.

Nowadays, Korean students are avoiding to learn science because it is too complicated. Nontheless, they need to study science to improve Korean technology. Also, we should consider King Sejong's deligency and stduy Korean hard as well.