Of course, Hilbert didn't mind Ruth suddenly changing the subject... or rather, they both understood Ruth's main intention.
Otherwise, just for an eagle, even if Ruth is genuinely interested in the way to create such strange objects, he could wait until his Magic Tower is built to discuss it.
But, for Ruth, the best time was tonight.
His character is inherently intrigued by these things, so if he can't come up with an answer late at night, he may impulsively look for Gilbert for advice, naturally following the course.
Conveniently, he has a good excuse: although Aislin and Gilbert reconciled, Gilbert still suffered in this situation.
The ring given by Aislin, while rich in resources, considering future development... staying confined in the Magic Tower after reaching the Seventh Ring is not ideal.
A mage needs to have their own understanding of the world, and once they are convinced of this understanding, they can find their path in the Law.
