MTL - Zombie Evolution - Chapter 3 Blessed by disaster, promoted to zombies

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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WARNING!-DARK ROMANCE-“Why do you have scars?” All of sudden, Iris changed the topic, as she looked at Cane in the eyes. She was still clutching to his sleeves.“Your father gave me,” Cane replied. He thought, Iris wouldn’t remember this conversation when she woke up.“That must be so painful.”“They are.”“Will the scars heal?”“I don’t think so.”The night indeed made you vulnerable and let you said something that you would never admit when it was bright. The obscurity softened your heart.“Too bad. You have a warm soul.” Iris frowned slightly.“I no longer have a soul.” He had sold his soul for the freedom of his people. There was nothing left of him right now.“Yes, you have, but you are in so much pain.” Iris blinked her eyes. “Your beast is in pain. You have so many scars.”“The only scars that I have is on my face.”Iris shook her head meekly. “I am not talking about your face. I am talking about your soul. Too bad, you are in so much pain… what my father and brother had done to you must be painful…”And after that, Iris closed her eyes and fell asleep.======================She is the daughter of an alpha who has killed his family, razed his pack and has also made his people slaves.Now, he has achieved revenge after ten years of being treated as a slave and was living a life that no one would ever imagine. Life akin to hell.And ten years later, Alpha Cane manages to take over and kill the alpha who has made the lives of his people worse than death.It was time for him to make the children of the alpha pay for what their father had done.Only…Iris was a runt and she was very different from her father.

MC (female protagonist) dies in a plane crash and wakes up in the body of a beautiful but corrupt and lascivious prime minister in ancient times, Zhang Qinglian. As circumstances decree, he (she) cannot reveal that the original owner’s soul is gone else calamity might occur. So he (she) decides to walk a righteous path, determined to help the lovely but simple little emperor rule the country. Not backing down after facing torture, not losing courage, destroying rebellions and facing off with scheming princes.

During the day, she was his secretary, working very hard with excellent abilities. At night, she was his bedmate, trying her best to please him, and the two of them were very harmonious in bed. One day, this relationship was on the verge of ending. However, both of them had already become deeply involved and had grown accustomed to each other's presence, falling in love with each other. So...