da zhuang; hexagram 34 of the I Ching; the power of the great
Refers specifically to hexagram 34 of the I Ching (易経), composed of thunder (雷) above and heaven (天) below. Used in classical Chinese philosophy and divination contexts.
See also: 易経
The thirty-fourth hexagram of the I Ching is called da zhuang (the power of the great).