Pino followed the direction Derek gave, he watched Derek use the magic. Derek demonstrated Earth Bullet, an ordinary magic and easy enough for anyone with an affinity for the Earth element to learn. His movements were fast enough and he created a pretty difficult situation when he unleashed his magic.
Just looking at it didn't have much of an impact, and Pino tried to follow what Derek was doing. The mana in his hand turned into something different, there was a brown color moving above his hand, slowly the brown mana changed into something different, with the shape of a tube like a bullet.
It was long enough for him to change it, the mana in his hand grew even more and more concentrated. When Pino moved his hand, swinging it like he was throwing something, the mana that turned into a bullet immediately left his hand and rushed to the wood in the room, and destroyed it.