I Have A Baby From My Ex-Husband's Enemy - Chapter 30: She’s Not Barren, I Know That!

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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After seeking pleasure in the nightclub and a night of romance, he discovered there’s a seed in his stomach;

Introduction (2): Beautiful girl’s exclusive car, street supercar, hardcore off-road, thugs in suits, small steel guns, urban SUVs, golden collar favorites, tool cars, irritable pickups, grocery shopping cars… car explosions, passionate racing , practice second-hand cars, everything here.

Introduction (1): Secretary: “Mr. Zhang, this quarter, the sales of used cars increased by 250% month-on-month, and the sales of new cars increased by 380% month-on-month. The profit of car modification, repair and other businesses also hit a new high.”

Zhang Chen: “Okay, hard work, give one million yuan to each reader who supports this book.”

PS: This book is in the third person. 1 and a half female lead.

- Description from novelbuddy

Nie AnAn woke up one day and realized that she had transmigrated as the villain’s adoptive sister.

In the novel, the villain conquered left and right, and his always woe-is-me younger sister was always cleaning up after him. The two of them were rightfully the grim reapers in the book.

The very next day after her transmigration, the soft and delicious Nie AnAn passed out from seeing blood.

And so —

The shivering competitors noticed that their nemesis’s sister had turned to a delicious treat — and wanted to protect her;

The original male lead noticed that young Miss Nie, who had been chasing after him this entire time, wouldn’t even give him the time of day anymore — and felt unbalanced;

Young Master Nie was very happy that his parents had two kids back then– she was so GD cute;

A certain cold blooded and violent villain had been going home earlier and earlier, and the way he talked was becoming gentler and gentler.

Villain Brother: AnAn, come over. Let me try some of it.
Nie AnAn: Hold on, gege. It’s not ready yet.

- Description from Novelupdates