Synopsis
Zhang Xuan arrived in another world to find himself an honorable teacher — not the profession he would have chosen, but the one he got. What he also got was a mysterious library in his mind: observe anything once, and a book on its every flaw appears automatically. Every martial technique, every cultivation realm, every arrogant emperor and demon lord — all catalogued, analyzed, and ready for ruthless instruction. Zhang Xuan has opinions about the emperor's wardrobe, the Fairy's sleep schedule, and the Demon Lord's garlic consumption. A cultivation story about teachers and students, expertise misused in spectacular ways, and…
