Snowstar

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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Author's current works: War Online, My Soul Card is a Reaper
Author's other notable works:  The Last Slytherin, The Sharingan Hyuga
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You can also support the Author through Patreon or buy coffee on Ko-fi.com

https://www.patreon.com/snowstar

https://ko-fi.com/snowstar5061

Weapon seller in the world of magic

The whole courtroom went silent as the two royal inspectors reported everything in detail, starting from the town of Maxong where the Meng Clan was extorted to the city of Shangwan where the Sui Clan's Mansion and the city prison tower was decimated.

The third prince finally understood why this eldest brother of his was trying to drag Lu Zhen into this mess. It's because the weapon store owner indeed caused a mess and can be considered a criminal.

So, the crown prince was putting all the other crimes onto him, so that he may escape from any kind of interrogation. Perhaps, the crown prince Shang Zexi would later kill Lu Zhen in the prison and erase this matter for good.

Shang Wei saw the Emperor's facial expression also change to that of a frown. Indeed, he was displeased by the actions of Lu Zhen. But, at the same time, defeating the Sui Clan's Grand Elder with such ease isn't a simple feat.

Wait a second. Defeating Sui Rong with a flying weapon?

The Crown Prince's conspiracy against Mark (part-2)