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.

“Emperor 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 Lord 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!

Reborn as a poor young man in an unknown mountain village in another world, Lu Qing expressed his helplessness.

Fortunately, he awakened a power that could see through item information, which gave him some capital to survive.

He looked at a weed on the side of the road.

[Ox bone grass is of average quality and can be used medicinally. It is quite effective in treating bone injuries. 】

Look at the red carp in the river.

[Red Moon Carp is of high quality, with delicious meat, and is a top-quality nutritious food. 】

Look at a hare in the mountains.

[Gray rabbit, common hare, edible. 】

…

Relying on his own supernatural powers, Lu Qing gradually established a foothold in the village and was able to survive.

Just when he thought that he would spend his life peacefully in this ancient world with low productivity.

One day, he suddenly saw a figure flying past in the sky...