Heng Sao Tian Ya

Traversing into another world, Zhang Xuan finds himself becoming an honorable teacher. 
Along with his transcension, a mysterious library appears in his mind. 
As long as it is something he has seen, regardless of whether it is a human or an object, a book on its weaknesses will be automatically compiled in the library. 
Thus, he becomes formidable. 
"Monarch Zhuoyang, why do you detest 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 find yourself unable to sleep at night. I am skilled in lullabies!" 
"And you, Demon Monarch Qiankun! Can you cut down on the garlic? Are you trying to kill me with that stench?" 
This is an incredible story about teachers and students, grooming and guiding the greatest experts in the world!
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Millman97

Library of Heaven's Path

StarveCleric

Daoist6fubtiW

It was not convenient to allow Feng Xun to see the current sight before him. Otherwise, how could Zhang Xuan explain how he was able to disguise himself as an Otherworldly Demon and have the Stoneleaf King and Jadeleaf King fight against one another? Not to mention, even if he could come up with an explanation, it was another matter whether Feng Xun would trust him or not. After all, anything concerning the Otherworldly Demons required caution.

Thus, the most effective method to use at this point was to just knock the other party out.

It was simple, efficient, and effective. There was no point going to so much trouble when there was such an ideal solution. Besides, the bricks from the collapsed buildings all around him only seemed to be further tempting him into it.

Fudging