Ohaeng

The ohaeng (오행/五行), or Five Elements, is a cosmological framework originating from ancient Chinese philosophy that plays a central role in traditional Korean naming practices. The five elements — mok (木, wood), hwa (火, fire), to (土, earth), geum (金, metal), and su (水, water) — are believed to constitute the fundamental forces governing the universe. In naming, each hanja character is associated with one of these elements based on its radical (the semantic component of the character), and the goal is to achieve a harmonious balance among them.

Application in Naming

When a professional name consultant (jakinyeongsa) creates a name, they first analyze the child's saju (four pillars based on birth year, month, day, and hour) to determine which elements are strong, weak, or absent in the child's innate constitution. The name characters are then selected to compensate for deficiencies. For example, if a child's saju lacks the water element, the consultant might choose hanja characters containing the water radical (氵) such as 浩 (ho, meaning 'vast') or 泳 (yeong, meaning 'swimming'). The productive cycle (wood feeds fire, fire creates earth, earth bears metal, metal collects water, water nourishes wood) and the destructive cycle are both considered.

Scientific Perspective and Continuing Influence

While modern science does not support the metaphysical claims of ohaeng theory, the practice remains deeply influential in Korean culture. Surveys consistently show that a significant proportion of Korean parents — even those who are otherwise secular — consult ohaeng analysis when naming their children. The tradition reflects a broader Korean cultural value of seeking balance and harmony in all aspects of life. The dollimja (generational character) system in many clans explicitly follows the five-element cycle across generations, embedding ohaeng principles directly into the family naming structure.