Dark mage was immersed in all kinds of books in the study. Dudian also used perspective to look at all kinds of books. However it was very difficult to distinguish the reverse side or the side side, but this inadvertently made Dudian more proficient in the ability of perspective. He was able to penetrate the paper industry one by one.
The night was getting darker.
Black mage seemed to be tired. He took out his pocket watch and looked at the sky. He closed the book and left the study room.
