before Korean was invented, Chinese letters are used in Korea. Korean was invented based on the form of mouth that need to speak that sound. For example to say 'ㄱ', your mouth should be form like that.
Not all Korean letter was made based on this concept but King Sejong who is known as inventor of Korean tried to make the public learn letter and write letter quickly, that requires easily understandable form.
Not all Korean letter was made based on this concept but King Sejong who is known as inventor of Korean tried to make the public learn letter and write letter quickly, that requires easily understandable form.