Nine in the third place means

The well is cleaned, but no one drinks from it.

This is my heart's sorrow,

For one might draw from it.

If the king were clear-minded,

Good fortune might be enjoyed in common.

An able man is available. He is like a purified well whose water is drinkable. But no use is made of him. This is the sorrow of those who know him. One wishes that the prince might learn about it; this would be good fortune for all concerned.