Like the early Japanese, the Korean people borrowed Chinese characters, but recorded them in the language. Chinese characters can't fully and accurately express the meaning of Korean pronunciation. Most of them are aristocrats who can learn and use Chinese characters, which is difficult for ordinary people to reach.
Extended data:
I. Background
Around the 3rd century AD, Chinese characters were introduced into Korea, and later the Korean language was recorded by the sound and meaning of Chinese characters, that is, "official reading". However, due to the influence of feudal social hierarchy. Most people who can learn and use Chinese characters are aristocrats, and it is difficult for ordinary people to get in touch with them.
Moreover, some "official reading texts" created by combining Chinese characters are not suitable for the phonetic system and grammatical structure of Korean, so it is sometimes difficult to mark Korean accurately. Therefore, at that time, people very much hoped to have a text that was not only suitable for Korean phonetic system and grammatical structure, but also easy to learn.
From the perspective of the ruling class, in order to facilitate the people to implement their own ruling policies, it is also necessary to invent a phonetic notation that is easy for the people to master. In this way, under the active advocacy of Wang Shizong, the fourth generation of the Korean dynasty, a number of outstanding scholars such as Zheng Linzhi, Shen, Cui Heng and Cheng Sanwen appeared.
On the basis of studying Korean phonology and Chinese characters for many years, 1444 created Korean Chinese characters consisting of 28 letters. During this period, Korean scholars came to China many times to study tonality in Ming Dynasty.
Second, the rules of word combination.
Korean characters are grouped in syllables, and one syllable constitutes a Korean character. The arrangement of each letter follows two basic rules: from left to right and from top to bottom. Korean syllables are composed of initials, finals and finals.
In the practical application of language, some syllables have three parts; Some syllables have only initials and finals, but no finals; And some syllables have vowels and finals, but no initials; Besides, there are only vowels.
Baidu Encyclopedia-Korean