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.
***
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.
**************
Author's current works: War Online, My Soul Card is a Reaper
Author's other notable works:  The Last Slytherin, The Sharingan Hyuga
**************
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

Life in the Ancient Lan clan is anything but a home. Due to his stark resemblance to Lan Gengxin or because of his rebellious attitude toward the elders as soon as he returned, everyone mostly stayed away from Mark, save a few. No one cooperates with him. No one tells him any directions to anything. No one returns his greetings. And it didn't take much time for Mark to realize that some of the elders of the clan were behind these unwelcoming reactions. He couldn't care less as he just had to win the heir trials and force them to acknowledge him.

Shang Jiao, on the other hand, had a better life. Lan Ming, The God realm (13-circle) expert takes her as his personal disciple.

Meanwhile, Mark and Shang Jiao join the clan as inner sect disciples.

The Ancient Lan Sect