The Korean alphabet 'Han'gul' invented by a team of scholars commissioned by the Great King Sejong in 15C is very creative and unique. Han'gul , which was called hunmin chong'um, is completely different from and independent of the Chinese alphabets. It is a remarkably scientific writing system expressed in syllable blocks consisting of a initial, medial and final sound. This is based on the criticism on Chinese dichotomy. These three-sound syllable blocks mirror the Korean belief in the combination of the powers of the heavens, earth and man to create the universe. The initial and final consonants signify the heavens and earth, while the medial vowel represents man. Han'gul shows Korean idea of number and Korean thoughts related the number "3".