Traversing into another world, Zhang Xuan found himself a revered teacher. Along with his transcension, a mysterious library appeared in his mind. As long as it was something he had seen, regardless of whether it was a human or an object, a book about his weaknesses would automatically be compiled in the library. Thus, he became formidable. “Emperor Zhuoyang, why do you hate wearing your underwear so much? As an emperor, can’t you pay a little more attention to your image?” “Fairy Linglong, you can always look for me if you can’t sleep at night. I’m skilled in lullabies! “And you, Demon Lord Qiankun! Can you cut down on garlic? Are you trying to kill me with that stench? “This is a wonderful story about a teacher and student, caring for and mentoring the world’s greatest experts!