I am the Architect, the foundation upon which all of civilization exists. True, not just anyone can be as useful as me, but even someone as low as you can be of use for something. Right?
Yes, of course you agree. Now listen well. Along the shores of the lower Nile, the Nubians build Citadels in which they hide between their raids. The Pharaoh wonders if it could be useful for us to learn to build these Citadels. I have superior designs, but a demonstration of the inferiority of the Nubian Citadel is in order. Destroy one, and do it quickly. Show how weak they are to your Egyptian might!
You are not going to destroy anything just sitting around here.
Yes, yes, that seems adequate. But they have stronger Citadels farther downriver.