Yi Jing, Oracle of the Moon

Kūn-Lí, Earth-Fire
    

  When Kun changes into Li, the sun descends into the earth, it becomes dark. But Fire and Earth also mutually support each other, their relationship is harmonious, and the darkness will not last. Great difficulties will bring happiness if one can cope with this succession of dark and light, if one knows how to use both darkness and brightness, each in its own time.

This is the short answer - click for the complete one.

The initiative

    
The top line (Heaven-line) shows the change of the focus or initiative.
变上为艮也, 地起于山自下而上, 有积小成高之势。
无伐善,无施劳,万民服而事业盛也。
  When the top line changes it activates Gen: the mountain. The earth rises at the mountain from below to above; it is the power of height (attainment) by accumulating small successes.
No boasting of good qualities, no boasting of merits; all people obey and enterprises flourish.

The subject

    
The bottom line (Earth-line) shows the change of the field or subject.
变初六为震, 为雷, 雷出地中, 奋达疾速, 威声
三三远赫, 有寒木生春之意, 万汇咸亨, 品物流行, 发荣茂盛, 无适不宜。
 When the bottom line changes, Kun activates Zhen, thunder comes from the earth. It comes energetically and quickly. Its prestige extends far and wide.
  Earth with Thunder is a great tree that benefits others. It can grow by depleting the Earth, but by growing, everything else can benefit from it. It is like resistant trees, cold and bare in winter, but announcing spring early (metaphor for high moral integrity).
  Everything on earth is effortless, all living beings spread out, fame abounds. There is nothing that would not be appropriate.

The outcome

    
The middle line (Man-line) shows the outcome.

  The middle line indicates the result. It is unchanging yin, this project will stay attractive, but also continue to absorb efforts, knowledge or resources, because its developing stage is not finished and not all possibilities have been explored. It still needs input and keeps doing so for the time being. It is too early to decide about a final direction, there will be no output yet.
  But yin is the one who can bring about concrete results. Yin stays in the background and does the work. It is nurturing, defusing crises, monitoring the process, building up and rounding out.
  This is the 'man' line, it can also be about you yourself, not only what you do.

Love for the work dissolves the effort.

  

  The three 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. They reinforce the overall power of a reading.

  Advice or help for the initiative: Gen, Mountain with his constancy, his ability to make things endure
  Advice or help for the subject: Zhen, Thunder with his energy and stimulation and quick actions
  Advice or help for the outcome: Kan, Water, with his direction and focus, his courage to take risks and his talent to give things shape, is lacking here or not needed. Yin remains Yin.
  But when things are not satisfying, it might be that one or more helpers don't help enough - or try too hard. Or maybe you don't listen carefully enough.