Yi Jing, Oracle of the Moon

Kūn-Zhèn, Earth-Thunder
    

   When Kūn changes to Zhèn, thunder comes from deep in the earth, bringing up old memories and forgotten wisdom and fears. They will shake up the surface, destroying and renewing. Many things will leave, plowed under but still food for coming times. Other things emerge. They return from the roots of the tree of life, a rebirth of the soul deep in the earth. Sleeping seeds awaken, touched by Thunder. Zhen ends and starts, over and over, and Earth absorbs the endless succession of life’s going and returning and replies with her power to create new life.
  The character 'zhen' is an image of a plow. In the West we know the same symbol as an old man with a scythe, the one who mows down the old. Both create space for the seeds of a new cycle.

This is the short answer - click for the complete one (with 'your' helpers).

  About the 3 lines of the trigrams and the helpers:
  Each line, active or at rest, summons one of the 8 trigrams as a Helper. For an activated line: telling you what you need - or about a problem area or something to avoid.
  For a stationary line: this is what you already have or do or what you don't need. Often we just need a reminder of our abilities. Or it could be what you wish or fear - but will not happen.
  Active lines are the helpers to change things, they listen to intentions, which can come from you, surroundings, or fate. Stationary helpers are part of the core meaning, they are your soul talking, but they also see the impossibilities or what is lacking at the moment. They reinforce the overall power of a reading.