I Became a Level -99 Vicious Lord - Chapter 167:

Fate, a gatekeeper who had been working for the castle, is beset by a few burdens.

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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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!

- Description from Novelupdates

When you were six years old, after watching a martial arts movie, you put your hands into the rice pile and imagined that you were practicing iron sand palm.

When you were seven years old, you were the first to greet a stranger in the new semester, and you felt that you were the diplomatic spokesperson for your class.

When you were eight, you could tell it was your parents coming home just by hearing footsteps, so you thought you had a good ear…

……

What will happen when the fantasy of secondary school when you were young becomes reality?

Ji Ruo stretched his hands into the rice pile—

[Congratulations to the host child for unlocking the achievement of Martial Dao: Iron Palm Mi Nei Shen! 】

[Acquired Martial Skill: Iron Sand Palm (first glimpse of the door)]

[The skill level can be repeatedly obtained by activating the proficiency. Heaven rewards diligence, host children, come on~]

Ji Ruo’s mouth twitched, he felt that his achievement system was not normal.

After thinking about it, Ji Ruo picked up a small wooden stick and walked to the rice field not far away…

……

- Description from novelbuddy