Six in the fifth place means:
Darkening of the light as with Prince Chi.
Perseverance furthers.
Prince Chi lived at the court of the evil tyrant Chou Hsin, who, although not mentioned by name, furnished the historical example on which this whole situation is based. Prince Chi was a relative of the tyrant and could not withdraw from the court; therefore he concealed his true sentiments and feigned insanity. Although he was held a slave, he did not allow external misery to deflect him from his convictions.
This provides a teaching for those who cannot leave their posts in times of darkness. In order to escape danger, they need invincible perseverance of spirit and redoubled caution in their dealings with the world.
Six at the top means:
Not light but darkness.
First he climbed up to heaven,
Then plunged into the depths of the earth.
Here the climax of the darkening is reached. The dark power at first held so high a place that it could wound all who were on the side of good and of the light. But in the end it perishes of its own darkness, for evil must itself fall at the very moment when it has wholly overcome the good, and thus consumed the energy to which it owed its duration.