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

"This is the Primal Lodestone Mountain!"

Worried that they might catch the attention of the two Sovereigns, Zhang Xuan and Wu Chen did not dare open a dimension rift and teleport over. Fortunately, the Primal Lodestone Mountain was relatively close to the capital, so it only took them two hours to arrive at their destination.

Despite bearing the name of a mountain, a more exact term would probably be 'abyss'. The abyss was dyed with the monotonous color of absolute darkness, and it covered all that they could see. A chilling and eerie air could be clearly felt from within.

"Allow me to give it a try!" Floating above the abyss, Wu Chen took in a deep breath and shouted, "Brother Hao Xun, Chen Yong has come to pay a visit to you!"

His voice manifested in the form of thin threads of zhenqi, which transmitted his voice into the depths of the abyss, echoing countless li below.

Ancient Sage Hao Xun