Explanation 1 · Principles of Creation

The medial vowels are created within the harmony of
    Heaven Earth and Human, reflecting the cosmic principle of
    Hattangsa or Hasattang(Samjae: the Three Principle).
    Each sound embodies the laws of nature and the universe,
    symbolizing the balance and interaction between Heaven,
    Earth, and Human.


    Creation of vowels ㅛ ㅑ ㅠ ㅕ with Human role

    The compound vowels ㅛ ㅑ ㅠ ㅕ (yo ya yu yeo) are
    formed by adding ㅣ(Human) to the basic vowels ㅗ ㅏ ㅜ
    ㅓ(o a u eo).
    This represents an advanced harmony, where the influence
    of Human ㅣ(i) is added to the balance of Heaven ㆍ[ʌ] and
    Earth ㅡ(eu).
    ㅛ (yo) starts from ㅣand transitions into ㅗ, symbolizing a
          human influence on the rising sun.
    ㅑ (ya) starts from ㅣ and transitions into ㅣ, representing
          Human giving meaning and purpose to creation.
    ㅠ (yu) starts from ㅣ and transitions into ㅜ (u), reflecting
          Human impacting the setting sun.
    ㅕ starts from ㅣ and transitions into ㅓ, signifying Human
          connecting and completing the cycle of creation.



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