The Two Kings were speechless when they heard the term 'Information' from the mouth of someone they had just recognized as an artisan. Aelius could tell by the expression on their faces that they thought the same thing he was: "What kind of 'Information' will be so valuable that it will drive the two races to build this 'Magic Tower'."
Merlin didn't tell Aelius, what he would be giving as compensation to the races before coming to this conference. Aelius believed Merlin possessed some type of material that solely existed in the World or something related to Titans because these are the things, he can think of that can persuade the Kings to order the races for the construction of the Tower.
The Gnome King said, "What kind of valuable 'Information' do you have that is equivalent to the compensation for constructing this Magic Tower? I warn you that if you play any tricks now, I will consider it an insult to the whole Gnome Kingdom."