Zhang Xuan traveled through another world and became a glorious teacher. A mysterious library appeared in his mind. Anything he had seen, whether it was a person or an object, could automatically form a book, recording the various shortcomings of the other party. So, he became awesome! He taught students, accepted apprentices, gave classes, cultivated the strongest, and taught the world. This is a cool story of inheriting the teacher's way, cultivating and guiding the world's strongest.