Xu Yi reached out in puzzlement to catch it and found that Great Mage Camilla had tossed him a dark, square, silver-white metal box, roughly twenty centimeters on each side and five centimeters thick.
The metal box felt very light in his hand. It was probably made from the ultra-light rare earth alloy recently developed by the Steel Smelting Center.
This new rare earth alloy was not only extremely light but also exceptionally hard, with excellent mana permeability. A magic array inscribed on it would perform far better than one inscribed on ordinary metal.
The various types of magic machinery produced by the Xinfei Merchant Guild had already begun gradually adopting this new rare earth alloy for their core magic array components, upgrading the entire product range.
The next-generation Bladeless Adaptive-Speed Magic Fan, due to go on sale that summer, used this rare earth alloy for its core magic array power source.
According to measurements taken by the Magic Research Institute, this change alone increased the new Magic Fan's magical power output by a full seventeen percent, considerably more than even upgrading the power-source magic array by one level would have achieved.
Since the amount of rare earth ore obtained from the Milando Duchy was still limited, the supply of refined rare earth alloy was naturally small as well. The Xinfei Merchant Guild was therefore very cautious-even stingy-with its use. Apart from making power-source components, they used only small quantities for magical experiments.
As a Senior Researcher at the Magic Research Institute, Great Mage Camilla had the privilege of freely using its various research materials, but she certainly would not waste them.
Then... what exactly was this metal box for?
"Try feeding a little mana into it, and you'll find out." Great Mage Camilla pointed at the metal box and