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

https://www.patreon.com/snowstar

Weapon seller in the world of magic

In the sky, the divine throne was flying at hypersonic speeds in the form of a fighter that looks like an F-14 Tomcat. Mark was sitting in the pilot seat but he wasn't piloting at all. He just sat in the front and let the girl sit in the back.

There's a reason why he transformed the divine throne into such an appearance. He wants to give Zan Rong peace of mind.

He thought it is best if she doesn't see his face for a while after the recent incident as she might not be in the mood to talk. Once her bad mood subsides, he hoped for things to become normal.

They traveled for a couple of hours before ending up at a place that seemed like a large city. However, almost all the buildings were damaged and dark creatures could be seen roaming here and there.

A weird ritual in Void Temple: Xin Rui's vow of revenge