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

Zhang Xuan shook his head and replied, "I've never heard of it before."

"You've never heard of it before?" Ancient Sage Zi Yuan was slightly surprised to hear that answer. With a slight frown, he asked, "Zhang shi, you met our teacher's clone in the Azure, right? Do you notice any difference between our teacher and his clone?"

"Difference?" Zhang Xuan pondered for a moment before replying. "To be honest, at the very start, I was unable to discern any difference at all, be it in terms of his body or soul. I would say that the greatest difference between the two of them is their personality…"

It was not without reason that he had been fooled by Kong shi's clone back then.

If not for the other party's attempts to kill him, he might have been fooled by the other party's facade.

Kong shi's Plan