Chapter 338: Chapter 338: 326: The Empire's Griffin Knights Cross the Border!

After returning to the ground from the air, the first thing Rafael said made everyone present stun.

“I’m afraid it will be very difficult to continue the experiment!”

“Master, what exactly is the matter? Could it be that the angle of the light’s refraction is incorrect?” Nancy asked anxiously, although they had confirmed the placement of each mirror according to the blueprint numerous times.