THE SIGN:

Trigram Chên, the Arousingabove Chên the Arousing, Thunder
Trigram Ch'ien, the Creativebelow Ch'ien the Creative, Heaven

The great lines, that is, the light, strong lines, are powerful. Four light lines have entered the hexagram from below and are about to ascend higher. The upper trigram is Chên, the Arousing; the lower is ch'ien, the Creative. Ch'ien is strong, Chên produces movement. The union of movement and strength gives the meaning of the Power of the Great. The hexagram is linked with the second month (March-April).