Yin–Yang, Bagua, and Kukkiwon Symbols
Reference for WTF/WT Taekwondo students. Start with Yin–Yang fundamentals, then the eight Bagua trigrams, then how these ideas inform Taegeuk poomsae and Kukkiwon symbolism.
1) Yin and Yang
陰 Yin receptive, cool, dark, sinking, restful. 陽 Yang active, warm, bright, rising, expressive. They are complementary phases of one process, not moral opposites.
Core properties
| Yang | Yin |
|---|---|
| Active, expanding | Receptive, consolidating |
| Light, heat, day | Shade, cool, night |
| Heaven, fire, summer | Earth, water, winter |
| Assertive, external | Reflective, internal |
Four rules to remember
- Opposition: they differ by function.
- Interdependence: neither exists alone.
- Containment: each carries the seed of the other.
- Transformation: extremes reverse over time.
Martial lens: power alternates between hard/expansive (Yang) and soft/absorbing (Yin). Effective poomsae and sparring express rhythm between the two.
2) Bagua (八卦) — the eight trigrams
Each trigram is three stacked lines: solid ⚊ for Yang, broken ⚋ for Yin. Eight distinct
patterns describe fundamental situations in nature and action.
| Symbol | Name | Chinese | Image | Quality in practice | Belt |
|---|---|---|---|---|---|
| ☰ | Qian / Geon | 乾 | Heaven | Initiating, creative, uncompromising focus | Yellow |
| ☷ | Kun / Gon | 坤 | Earth | Receptive, steady base, adaptive footwork | Black Stripe |
| ☲ | Li / Ri | 離 | Fire | Clarity, timing, precise striking | Green |
| ☳ | Zhen / Jin | 震 | Thunder | Explosive start, shock, forward drive | Blue Stripe |
| ☴ | Xun / Seon | 巽 | Wind/Wood | Penetrating, continuous pressure, angles | Blue |
| ☵ | Kan / Gam | 坎 | Water | Yield then flow, trap-and-counter | Red Stripe |
| ☶ | Gen / Gan | 艮 | Mountain | Rooting, stopping power, guard integrity | Red |
| ☱ | Dui / Tae | 兌 | Lake/Joy | Relaxed readiness, elasticity, breath | Green Stripe |
Lower vs upper trigrams in a hexagram: the lower suggests inner condition or method; the upper suggests the outer situation or objective. The I Ching combines two trigrams to form 64 hexagrams.
3) Taegeuk poomsae and the trigrams
Modern Kukkiwon poomsae (Taegeuk 1–8) were developed 1967–1972. Each form encodes one trigram’s idea through directional stepping and energy quality.
| # | Korean | Hanja | Trigram | Meaning | Practice cues |
|---|---|---|---|---|---|
| 1 | Geon | 乾 | ☰ | Heaven | Initiate decisively. Long lines. Clean hip drive. |
| 2 | Tae | 兌 | ☱ | Lake/Joy | Relaxed power. Elastic breath and joints. |
| 3 | Ri | 離 | ☲ | Fire | Show clarity and timing. No extra motion. |
| 4 | Jin | 震 | ☳ | Thunder | Explode from stillness. Sharp first beats. |
| 5 | Seon | 巽 | ☴ | Wind/Wood | Continuous path. Penetrate lines and guard. |
| 6 | Gam | 坎 | ☵ | Water | Absorb then issue. Counter-flow rhythm. |
| 7 | Gan | 艮 | ☶ | Mountain | Stop cleanly. Root before technique. |
| 8 | Gon | 坤 | ☷ | Earth | Stable base. Even tempo. Low stances done well. |
Naming: you may also see “Taegeuk 1 Jang … 8 Jang.” The older Palgwe set used the same eight ideas with different choreography.
4) Bagua and Kukkiwon symbols
The Kukkiwon identity uses several layers of symbolism that relate to Yin–Yang and the trigrams:
- Taegeuk (태극): the red–blue swirl on the Korean national flag represents Yin–Yang in motion. Many Kukkiwon and WT visuals echo this curve and color split.
- Trigrams on the Taegeukgi: the national flag shows four trigrams (☰ 乾 Heaven, ☷ 坤 Earth, ☵ 坎 Water, ☲ 離 Fire). These are the most prominent public link between Bagua and Korean martial symbolism.
- Poomsae philosophy: Kukkiwon’s Taegeuk forms reference all eight trigrams in name and theme, even when a given patch or logo does not draw the full Bagua diagram.
- Patches and banners: schools sometimes use octagonal frames or full eight-trigram rings to acknowledge the complete Bagua. Design varies by organization and vendor. The official Kukkiwon logo is typically a stylized blue–gold “wave,” while national and dojang flags may include Taegeuk and selected trigrams.
5) Study prompts and testing cues
- Define Yin and Yang without using “good” and “bad.” Give two martial examples of each.
- List all eight trigrams with Korean names and one training cue each.
- Explain how Taegeuk 6 (Gam, ☵ Water) would change your rhythm compared to Taegeuk 4 (Jin, ☳ Thunder).
- Identify the four trigrams on the Korean national flag and their meanings.
- Describe how your school’s patch or flag references Taegeuk or the trigrams.
Prepared for Kang's Tulsa Taekwondo school. Educational reference for testing and form study.