What does it mean, 'inner' and 'outer trigram' (popup)
Thunder below Thunder: repeated shocks are necessary, because the new does not stay new, it gets loaded again with securities. Time after time one has to renew the universal laws within oneself, get in contact again with the cosmic truth. Or simply renew an outdated program or view.
Ideogram of the hexagram name: above heaven or clouds with rain, below an image of a hoe or an image of pregnancy or impregnation. It represents the start or end of a period or cycle, like clearing land, harvest, an occasion, the decisive moment.
Old version of the hoe. It is for clearing land, sudden change, cutting off. This is one of the zodiac signs (dragon), name of a star, days, time, the collective name of day-month-star, extend and stretch, beauty and good looks, morning. The image of pregnancy as the power to receive seeds and turn them into seedlings or sprouts.
The 'Great Image' says: Repeated thunder: shocks. The noble one through anxiousness and fear sets in order and examines.
Hex.51 is the contrast of 52, which is about standstill, warding off and solid matter.
Hex.51 is sudden movement and eruption, change, surprise and fright.