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

The island had a diameter of around a hundred kilometers. From afar, Zhang Xuan could see that it was filled with all kinds of towering plants, granting it a lush appearance. Surrounded by a massive formation, the spiritual energy within was particularly concentrated, and from time to time, one could see formidable saint beasts dancing in the air above.

"To be able to conceal an island with a diameter of a hundred kilometers, the man who set up the formation must be at least a 7-star formation master!" Zhang Xuan noted in astonishment.

He was currently a 6-star pinnacle formation master, but even so, a formation of such scale was still far beyond his means. Just how powerful must the senior who had built the Poison Hall here be?

Hongyuan Empire Poison Hall