Nine at the top means:
In the fullness of possession and at the height of power, one remains modest and gives honor to the sage who stands outside the affairs of the world. By this means one puts oneself under the beneficent influence descending form heaven, and all goes well.
Confucius says of this line: To bless means to help. Heaven helps the man who is devoted; men help the man who is true. He who walks in truth and is devoted in his thinking, and furthermore reveres the worthy, is blessed by heaven. He has good fortune, and there is nothing that would not further.