My Cell Prison - Chapter 378 - : Mutation

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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Wei Jin is full of romanticism, and the Five Barbarians are about to disrupt the Central Plains. This is the era Zhao Hanzhang transmigrated into, where commoners and families of humble origin are in distress, and the aristocratic families only engage in empty talks.In order to prevent the gentry from migrating south and to ensure that the world is free of starvation, allowing every common person to eat their fill, Zhao Hanzhang could only roll up her sleeves and get to work.Wei Jin lacks idle talks, we are the people who work hard for food in this world!This is a construction story about striving to survive in a chaotic world with a matchmaking partner, also known as “I Engage in Infrastructure in a Turbulent World.”Zhao Hanzhang encountered an accident on her way back to school after a matchmaking meeting, and upon opening her eyes, she found herself in the chaotic Southern and Northern Dynasties. In this era where order has collapsed and etiquette and morals are all forgotten, there are still people unwilling to succumb to fate, yearning for freedom, and striving optimistically and enthusiastically.

An alien race invaded the Earth on June 6, 2128. At the midst of this war, many nations allied with the alien threat and the war nearly wiped out the rebelling humans of the planet. At the edge of mankind's survival, the United Nations Army launched its forces to eliminate the immediate stellar threats that loomed over Earth.

General Seeker Carlean, commander and leader of the mission, risked and gave his life to destroy the immediate stellar threat. The battle was won though Earth lay in ruins. Perhaps mankind will live to see a few years of peace before the alien threat returns to wipe out their existence.

At the immediate aftermath of the stellar battle, the fallen Seeker Carlean awakens and finds himself at aged 17, living the peaceful life he lived 16 years before he died.

So begins a new game in the battle for humanity's survival.