"Gotcha!" Alex smiled upon seeing nothing stood before him. The dragons continued to make a long tunnel for him until he felt it was safe to make another hole leading to the surface.
Seeing how the dragons didn't get destroyed proved that there were not any more barriers underground.
He followed the tunnel and peeked outside, finding himself surrounded by sand.
"I am on the coast right now." Alex looked at his surroundings, ensuring that no more barriers were coming to him.
"That wind barrier is not supposed to be destroyed?" Alex tilted his head in confusion. "Anyway, now that I am out, I only need to be careful. Wait a minute, I think each test actually has a meaning behind them, just like how the Potential Tower was built. Even Teacher agreed to the explanation.