I recommend a novel about a person who became the leader of the martial arts world by memorizing secret manuals. He transmigrated to another world and possessed a useless young master.

I recommend Unparalleled Demon Emperor to you. This book tells the story of the number one assassin on Earth, Ning Yu, who transmigrated to another world and possessed a useless young master. He was determined to become the pinnacle of martial arts and finally became a generation of Demon Emperor, ruling the Nine Regions. I hope you like my recommendation.😗