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

2 hours and 30 minutes later;

As the time reached noon, Shang Wen returned to the court with a piece of bad news that Shang Xiang, the Grand Prince is nowhere to be found.

Following the rules, Emperor Shang announced the disqualification of Shang Xiang and just ended the trial with Shang Wei as the winner. Everyone was dismissed and given a break for the rest of the day.

Shang Jun, Shang Wei, and Shang Zexi proceeded to the next trial, which is called the Trial of Strength.

This trial is quite straightforward.

They shall choose their teammates and fight Bai Xun in the arena in a 2v1 battle. The only condition is that the selected teammate must be someone who works for the military. Retired or active duty, it doesn't matter.

Shang Wei was leading in the previous trial. Hence, he got the opportunity to choose his teammate before the others.

A Chapter Unveiled: Trials, Rivalries, and Hidden Agendas