The image
Thunder within the earth:
The image of THE TURNING POINT.
Thus the kings of antiquity closed the passes
At the time of solstice.
Merchants and strangers did not go about,
And the ruler
Did not travel through the provinces.
The winter solstice has always been celebrated in China as the resting time of the year - a custom that survives in the time of rest observed at the new year. In winter the life energy, symbolised by thunder, the Arousing, is still underground. Movement is just at its beginning; therefore it must be strengthened by rest so that it will not be dissipated by being used prematurely. This principle, i.e., of allowing energy that is renewing itself to be reinforced by rest, applies to all similar situations. The return of health after illness, the return of understanding after an estrangement: everything must be treated tenderly and with care at the beginning, so that the return may lead to a flowering.


The lines
Nine at the beginning [yang at bottom] means:
Return from a short distance.
No need for remorse.
Great good fortune.
Slight digressions from the good cannot be avoided, but one must turn back in time, before going too far. This is especially important in the development of character; every faintly evil thought must be put aside immediately, before it goes too far and takes root in the mind. Then there is no cause for remorse, and all goes well.
Six in the second place means:
Quiet return. Good fortune.
Return always calls for a decision and is an act of self-mastery. It is made easier if a man is in good company. If he can bring himself to put aside pride and follow the example of good men, good fortune results.
Six in the third place means:
Repeated return. Danger. No blame.
There are people of a certain inner instability who feel a constant urge to reverse themselves. There is danger in continually deserting the good because of uncontrolled desires, then turning back to it again because of a better resolution. However, since this does not lead to habituation in evil, a general inclination to overcome the defect is not wholly excluded.