Stop Bothering Me, Emperor - Chapter 83 Calculations

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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Traveling through the Xianxia world, Chen Chen got the strongest tracking system and was able to track everything ever since.

Kein Rosenguard, a reincarnated girl who suddenly became the crown princess's personal knight!

She fulfills her duties at the side of her highness, Princess Rosarie von Goldheart. A rebellious princess who would rather live her life as dressing as a commoner than attending fancy balls in the castle.

Kein decided she would spend her whole life protecting her Royal Highness but will she succeed in her mission and set aside her growing feelings for her?

Art is not mine! Only the story! Please tell me if you know the artist so I can credit them!

The main character Lei Yu does not have the ability to practice his family’s martial arts. He gets stepped on and tossed around. Due to certain reasons, he leaves the family, coincidentally gains an ability, and makes his own path to becoming an immortal.

- Description from Novelupdates