MTL - I’m Chasing Rough Guys at 80s - Chapter 79 she is not easy to mess with

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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Traveling to the world of Xianxia, ​​Shen Ping practiced like walking on thin ice for more than 20 years, but he didn’t have a golden finger. With his ordinary aptitude, his progress in cultivation was slow.

It wasn’t until I planned to lie down completely and married a wife that I was shocked to find that the way I opened the world of Xianxia was a bit wrong!

Jian Tian transmigrated into a Mary Sue school novel and became the cannon fodder female supporting character.Although she is cannon fodder, her entire family is full of villains.The villainous eldest brother opposes the male lead and leads the company to bankruptcy.The villainous second brother opposes the female lead and ends up with crippled legs.The villainous third brother is a love-struck fool and ends up on the streets.And she has it worse, being implicated and sent to prison.Why should she be the only cannon fodder in a family of villains? She wants to turn the tables! She wants to rise!However, just as she ignites her fighting spirit, she discovers she’s bound to a system that will obliterate her soul if she doesn't slack off.Jian Tian: “...”Lies down.And she even persuades her whole family to slack off collectively.Seeing the eldest brother working overtime at the company: “Stop working overtime; after all, the company won't be yours in the end! Trust me, first lose 1 billion!”Seeing the second brother busy with his medical career: “Don't work too hard, after all, you're ultimately making wedding dresses for others. Why not research a cure for crippled legs instead?”Seeing the third brother running errands for the female lead: “Isn't being a happy bachelor nice? Why must you suffer for love? Wake up, licking the boots will get you nothing in the end!”The three brothers of the Ji family: “...”Has our little sister gone crazy?Later, after experiencing the joy of slacking, the three brothers: “Hmm, this is nice...”However...We agreed to slack off together, so how did you quietly become a top boss?!Jian Tian awkwardly scratches her head: “There’s too much development in my field; I can't help it.”And the dark villain lurking in the shadows, aggressively wrapping his arms around her waist: “Hmm? How about including me too?”Jian Tian: “...”Don’t come near me!

She is an elder miss from a modern secret society family. She is very cold and heartless, but her appearance is very enchanting. She thinks of men as playthings. She was schemed against and her body was thrown into the sea.