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

To Zhang Xuan, it mattered not how many Blood Reincarnation realm Ancient Sages of the Otherworldly Demonic Tribe died. What he valued more was their fresh blood.

If he could gather sufficient Ancient Sage blood, it would become easier for him to push for a breakthrough to Ancient Sage.

As such, after piercing the enemy's palm with his spear, he delightedly began harvesting the other party's blood.

"You're asking to be slaughtered!"

On the other hand, the Otherworldly Demon Ancient sage was on the brink of succumbing to lunacy.

Harvesting Blood