Strength of Greatness
Upper Trigram:Chen, Thunderclap, Movement
Lower Trigram:Ch'ien, Creative Principle, Heaven
Governing Ruler:Nine in the fourth place

The Image
The trigram representing heaven, and above it that for thunder; these form Ta Chuang. The superior man, in accordance with this, does not take a step which is not according to propriety.

Miscellaneous Signs
While P'i and T'ai their different scopes prefer, Ta Chuang stops here as right; withdraws Tun there.

The Judgement
Ta Chuang indicates that under the conditions it symbolises, it will be advantageous to be firm and correct.

In Ta Chuang we see that which is great, becoming strong. We have the inner trigram, denoting strength, directing the outer, denoting movement; and hence the whole hexagram is expressive of vigour.
'Ta Chuang indicates that it will be advantageous to be firm and correct': that which is great should be correct. Given correctness and greatness in the highest degree, the character and tendencies of heaven and earth can be seen.

The Lines and commentaries
Bottom nine
Showing its subject manifesting his strength in his toes. But advance will lead to evil, - most certainly!
'He manifests his vigour in his toes': this will certainly lead to exhaustion.
Nine in the second place
With firm correctness there will be good fortune.
'With firm correctness there will be good fortune': due to its being in the centre, and its subject exemplifying the due mean.
Nine in the third place
Showing, in the case of a small man, one using all his strength; and in the case of a superior man, one whose rule is not to do so. Even with firm correctness the position would be perilous. The exercise of strength in it may be compared to the case of a ram butting against a fence and getting his horns entangled.
'Small men use all their strength; in the case of the superior man it is his rule not to do so.
Nine in the fourth place
Showing a case in which firm correctness leads to good fortune, and occasion for repentance disappears. We see the fence opened without the horns being entangled. The strength is like that in the wheel-spokes of a large wagon.
'The fence is opened and the horns are not entangled': the subject of it still advances.
Six in the fifth place
Showing its subject losing his ram-like strength in the ease of his position. But there will be no occasion for repentance.
'He loses his ram-like strength and hardly perceives it': because he is not in his appropriate place.
Top-most six
The ram butting against the fence, and unable either to retreat, or to advance as he would fain to do. There will not be advantage in any respect; but if he realise the difficulty in his position, there will be good fortune.
'He is unable either to retreat or advance': owing to his want of care.
'If he realise the difficulty in his position, there will be good fortune': his error will not be prolongued.

1. Ch'ien
Creative Principle

2. K'un
Passive Principle

3. Chun
Initial Difficulties

4. Meng
Youthful Inexperience

5. Hsü

6. Sung

7. Shih
The Army

8. Pi
Seeking Unity

9. Hsiao Ch'u
Minor Restraint

10. Lü
Treading carefully

11. T'ai

12. P'i

13. T'ung Jen

14. Ta Yu
Great Possessions

15. Ch'ien

16. Yü

17. Sui

18. Ku
Arresting Decay

19. Lin

20. Kuan

21. Shih Ho
Biting through

22. Pi

23. Po

24. Fu
The Turning Point

25. Wu Wang

26. Ta Ch'u
Restraining Force

27. I

28. Ta Kuo

29. K'an
The Abyss

30. Li
Clinging Brightness

31. Hsieh

32. Heng

33. Tun

34. Ta Chuang
Strength of Greatness

35. Chin

36. Ming I
Sinking Light

37. Chia Jen
The Family

38. K'uei

39. Chien

40. Hsieh

41. Sun

42. I

43. Kuai

44. Kou
Coming on

45. Ts'ui

46. Sheng
Moving upward

47. K'un

48. Ching
The Well

49. Ko

50. Ting
The Cauldron

51. Chen

52. Ken

53. Chien
Gradual Progress

54. Kuei Mei
Marriageable Maiden

55. Feng

56. Lü
The Wanderer

57. Sun
Gentle Penetration

58. Tui

59. Huan

60. Chien

61. Cung Fu
Inner Truth

62. Hsiao Kuo
Small Excess

63. Chi Chi
Completion and After

64. Wei Chi
Before Completion