MTL - Global Day Online - Chapter 24 Disguised as a senior passer

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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All she was doing was playing QQ Farm, how did she end up waking up somewhere foreign?

Wu Tao, a small mysterious trader, suddenly appears in the city of Jinan and encounters with Yuanbao, a foxy little beggar. Wu Taos identity as a trader is suspected soon, because on the day before he appears, Sun Jicheng, a millionare in Jinan dies a mysterious death, and people finds the dead one is his substitute. Around the countless wealth, confusing identity and the seven mysterious stars in the little beggar, various figures come on stage, starting a magical adventure story.

Monsters appear frequently, instances are everywhere!When various classes shine brightly, Li Haotian awakens to what everyone considers the most useless Illusion God class—the Mechanic!But what others don't know is that Li Haotian's Mechanic can unlock a special talent every ten levels![Unlimited Ammo]When others are cautiously navigating instances, Li Haotian is already surrounded by countless Superpower Mechanical creations—Gatling guns, Rocket Cannons, bombers, Wolverines, Terminators, intercontinental missiles, Aircraft Carriers...and, unlimited ammo![God's Eye View]While others are carefully exploring the enemy's situation, Li Haotian is eating hotpot and watching the enemy gradually fall into the encirclement of the superpower army, grinning.[Air Drop Support]When the enemy is playing outdated tactics like blitzkrieg and encircling points to reinforce, Li Haotian remains calm, pointing to the sky—the superpower army instantly descends thousands of miles away, covering the skies of Sakura Country!Abyss Dungeon, Slaughter Dungeon, large group instances, international war instances... Li Haotian sneers and goes alone.Because, I alone, can rival a million troops!