Conversation so far:
what did the chimú rule consist of?
a powerful elite rule over administrative centers.
The hierarchy was centered at the walled cities, called ciudadelas, at Chan Chan.
where were they located?
the Jequetepeque Valley.
who was at the bottom of the hierarchy?
lower-order centers managed land, water, and labor, while the higher-order centers either moved the resources to Chan Chan or carried out other administrative decisions.
What is Chan Chan?
CANNOTANSWER.
who was at the top of the hierarchy?
Chan Chan was the top of the Chimu hierarchy.

Question: what is an interesting fact regarding this rule?
Self-contained rewrite: What is an interesting fact regarding the Chimú rule?