1. Preface
1-1
1-2
1-3
1-4
1-5
2. Samjae
2-1
2-2
2-2-1
2-2-2
2-2-3
2-2-4
2-2-5
2-3
2-4
2-5
2-6
2-7
2-8
2-9
3. Haneul(Sky)
3-1
3-2
3-2-1
3-2-2
3-2-3
3-3
3-4
3-5
3-6
3-7
3-8
3-8-1
3-8-2
3-8-3
3-9
3-10
3-11
3-12
4. Tang(Earth)
4-1
4-2
4-3
4-4
4-4-1
4-4-2
4-4-3
4-4-4
4-4-5
4-5
4-6
4-7
4-7-1
4-8
5. Saram(Man)
5-1
5-2
5-3
5-4
5-4-1
5-5
5-6
5-7
5-8
5-9
6. Ilgiyae
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-7-1
6-7-2
6-8
6-9
6-9-1
6-9-2
6-9-3
6-9-4
6-10
6-10-1
6-10-2
6-11
6-12
7. Kang-Yu
7-1
7-2
7-3
7-3-1
7-3-2
7-3-3
7-4
7-4-1
7-4-2
7-4-3
7-5
7-6
7-7
7-8
7-9
7-10
7-10-1
7-10-2
7-10-3
7-10-4
7-10-5
7-11
7-12
7-13
8. Unity of SJKY
8-1
8-2
8-3
8-4
8-5
9. Mind of Taekwondo
9-1
9-2

7-1. Kang-Yu

Each of Samjae and Kang-Yu belongs to different level of discussion.¹⁾ Kang-Yu, like yin/yang or Heo/Sil, is distinguishable, so they are symbols of everything that shows themselves to eyes. When things show themselves to eyes they must be distinguished as a sort of symbol. Yin/yang, Heo/Sil and Kang/Yu lie on the distinction while Samjae underlies them as their foundation.

Because Samjae underlies Kang/Yu, yin/yang and Heo/Sil, they change according to Samjae. Therefore the formless One in the center of Samjae generates Kang/Yu, yin/yang and Heo/Sil. Hence it was said: “truth begins along the non-being, while trace appears caused by being,”²⁾ “therefore let there always be non-being, so we may see their subtlety,/ And let there always be being, so we may see their outcome.”³⁾

There is change in the undistinguishable One. With distinctions by time along this change you can get rhythm. “The rhythm, which is immanent in change, generates Yin and Yang through <Yeok> while it also produces Kang and Yu through <Do>, so since those four of Yin, Yang, Kang and Yu compose Man and the composition proceeds as breath there can be distinctions between Yin and Yang and between Kang and Yu only after Man(Saram).”(Ch.24) Therefore the fundamental framework of trigrams, which are the compositions of yin/yangs, is the Samjae while what are distinguished are yin/yang, Kang/Yu and Heo/Sil. These yin/yang, Kang/Yu and Heo/Sil are logictions, which are the relative, so when compared to lucks they are the emblems of good and bad⁴⁾ and when compared to a whole day they “become the emblems of day and night”⁵⁾ and the change of replacement and circularity.

Accordingly each step of change, when conceived by its figure, is yin/yang and, when conceived by its kinds it is Kang/Yu. Additionally the figure of Kang/Yu is yin/yang and the change of Kang/Yu is distinguished as yin/yang. Therefore you can conceive Kang/Yu as yin/yang and control yin/yang with Kang/Yu. But Kang/Yu is different from yin/yang. Therefore, if Kang were conceived as yin Yu becomes yang while if Kang were conceived as yang Yu becomes yin. Likewise if you can get yang with Kang you can reach yin by Yu while if you can get yin with Kang you will reach yang by Yu. Kang itself, however, is neither yang nor yin and same with Yu. And all the same with Heo/Sil.

1) Most people fail to recognize this difference so they talk of them in the same level. Thus they advance their discussion often saying, One refers to Taegeuk, Two to yin/yang, Three to Samjae, Four to trigrams and so on. In this false understanding, however, we cannot understand why yin/yangs compose hexagrams along the frame of Samjae.
2) 『셋을 모은 글(會三經)』, §1, 세 검(三神), “理從無起, 迹因有著.”
3) Lao Tsu, Tao Te Ching, 01, 故常無欲以觀其妙, 常有欲以觀其.
4) 『周易』, 繫辭上02: 성인이 ???? 聖人設卦觀象, 繫辭焉而明吉凶.
5) 『周易』, 繫辭上02: 剛柔者, 晝夜之象也. This text doesn't distinguish yin/yang from Kang/Yu, so it can be said there is no differentiation between epistemological and practical distinctions. Therefore in order to distinguish yin/yang and Kang/Yu you have to replace the Kang/Yu(剛柔) in this sentence with yin/yang(陰陽).