They hurried back to the place where the symbols were recorded and resumed their research. After careful analysis, Dean Bruce noticed that several of the symbols seemed to correspond to the letters in some way.
"I think I'm starting to get it," Dean Bruce said. "These symbols might represent a sequence. If we enter those letters on the stone door in this order, we might be able to break the seal and stop the source of the smoke."
Krupp, excited, said, "Then let's try it right away!"
They arrived at the stone door, and following Dean Bruce's hypothesis, they pressed the letters "Z, X, C, V" on the door in sequence.
The moment they pressed the last letter, a beam of light flashed across the stone door, the smoke from the entrance gradually stopped pouring out, and the surrounding walls ceased their movement.
"We did it!" Prolo Hawthorne said, gazing at Dean Bruce with admiration. "Professor, you're amazing! How did you solve this puzzle?"
