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

"You're right. I suppose Lord Mou Wu should have known all this…" Seeing that he had been exposed, Zhang Xuan could not be bothered to keep up with his disguise anymore and chuckled softly.

The three Otherworldly Demons narrowed their eyes menacingly as they prepared to leap at the person before them. However, before they could do so, a massive silhouette in the sky was already falling swiftly on them.

The Otherworldly Demon driving the formation was crushed into minced meat.

Following which, a skeletal dragon surged forward and bit off the head of another Otherworldly Demon. At the same time, a demonic saber easily severed the last Otherworldly Demon in half.

Those three Otherworldly Demons were only in the Introspective Convalescence realm. Since they had seen through his disguise, all he had to do was silence them.

High Commander