Guo Linn was still very curious in his heart. He didn't know how his big brother knew that he had already started cultivating Concealment Spells. After all, this spell was something he had just successfully cultivated, and this spell was something Guo Linn learned from that book "Sorcery." Therefore, he knew that besides himself, absolutely no one would know this spell directly.
Although Guo Linn himself did not mention that he knew Concealment Spells, he intended to use this spell as a trump card. After all, he had cultivated many spells at this point. But just as Ah Du said, such spells are best used as an auxiliary means in battle.
