May I Ask What to Do If a Talented Woman from Ancient Times Becomes a Idiot?

Ye Su caught up with the wave of time travel, but while others turned into geniuses, she turned into a idiot. The original owner was extremely talented, proficient in music, chess, calligraphy and painting, but she knew nothing about writing poetry. Everyone said that the third child of the Ye family lost his brain and turned from a genius into a fool. But the fool they said stepped into the military camp, served his country loyally, prospered on the battlefield, and even picked up a loyal dog man who could not get rid of him.