Since no one was likely to interrupt him at night, Leonard used the cards right away. The previous enhancement had allowed him to cross the boundary between ordinary and extraordinary, so the whole process didn't create much noise.
Of course, this was also due to the long-term and slow enhancement of his physical strength, so the mere increase in his limit didn't have much impact on him.
Throughout the night, Leonard only felt as if his whole body was immersed in warm light. When he woke up the next morning, there seemed to be no noticeable change.
However, upon further examination, he indeed found various pieces of foreign language knowledge in his mind. He also felt that his mastery of extraordinary power had taken a step closer.
It was clear that the demigod card contained hidden extraordinary powers, so this harvest was undoubtedly delightful for Leonard. Of course, the same applied to his gains in archaeology and history.