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

"I need to enter Sovereign Chen Ling's sleeping chamber to procure some dragon blood. Do you know any way for me to get in?" Zhang Xuan continued asking.

"I'm afraid that what you are asking for isn't too easy to pull off. After Sovereign Chen Ling returned injured, his sleeping chamber has become a place that even I can't enter easily. The only one who can walk freely in and out of his sleeping chamber right now is Ancient Sage Lan Ya, so he's also the only one who knows the details of Sovereign Chen Ling's current physical condition."

At this point, Ancient Sage Mo Ling paused for a moment to organize his thoughts before continuing. "Ancient Sage Lan Ya has been following Sovereign Chen Ling ever since he was very young, and he can be said to be Sovereign Chen Ling's most loyal subordinate. Even though he's only at the Bloodline Continuance realm, his standing within Sovereign Chen Ling's lineage is extremely high!"