Six in the fourth place means

Contemplation of the light of the kingdom.

It furthers one to exert influence as the guest of a king.

This describes a man who understands the secrets by which a kingdom can be made to flourish. Such a man must be given an authoritative position, in which he can exert influence. He should be, so to speak, a guest–that is, he should be honored and allowed to act independently, and should not be used as a tool.