Hangeul, the Korean alphabet, was invited in the 15th century by King Sejong and many scholars. King Sejong felt sorry for the people who were illiterate so he made letters that were easy to learn and use. When it was first invented, there were 17 consonants and 11 vowels, but now 24 letters in all, 14 consonants and 10 vowels, have remained. The consonants of Hangul represent the shape of the mouth when the letter is pronounced. The vowels are based on the three orders to heaven, hearth, and man according to the principle of Yim and Yang (the cosmic dual forces). Han-gul is a set of phonetic symbols and can make out most sounds that man can pronounce, as well as the sound of nature. Hangeul is known for it's scientific and systematic features among many alphabets of the world.
Korean (한국어 / 조선말), a language spoken by about 63 million people in South Korea, North Korea, China, Japan, Uzbekistan, Kazakhstan and Russia. The relationship between Korean and other languages is not known for sure, though some linguists believe it to be a member of the Altaic family of languages. Grammatically Korean is very similar to Japanese and about 70% of its vocabulary comes from Chinese.