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

"Ten thousand gold coins? Are you out of your mind?" Meng Jian Hong who was standing on the sidelines shouted at him.

Such an amount might be nothing to people like Lin Xue or Song Yue but for a minor noble clan like the Meng Clan, it is indeed a high amount. After all, they are based on a tiny town of Daqing where an average commoner possessed a wealth of below fifty gold coins.

So, it's natural that Meng Jian Hong erupted in anger, despite the fact that his son's life is at stake.

Meanwhile, the clan head Meng Yi Jun deeply frowned. "Are you serious?"

Mark leaned to the back and crossed his legs with his right ankle on his left knee, letting out a smirk, "I guess this guy lying over here isn't worth that much. I'll change my words, then. Consider it as the compensation for sparing the Meng clan. How about now?"

"You…" Meng Yi Jun was taken aback by his words. He clenched his fist, trying to control his rage.

Extorting money from the Meng Clan