Top-notch Master Masquerading As Cannon Fodder Female Companion - Chapter 939 - : What Could I Have Done?  

Suddenly being able to travel to various familiar worlds, to grow and develop in these various high-risk worlds, you need to follow the following guidelines:

1: If you want to get rich, don’t be afraid of death. If you are afraid of death, you can only eat other people’s leftovers.

2: Don’t always try to save the world, it will be bad luck to be a Virgin in other planes.

3: Don’t let go of good things, maybe you will lose a great opportunity because of this.

4: Don’t wantonly flood your feelings, you can only bring back sadness if you can’t take away the girl.

……

- Description from novelbuddy

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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When Li Xianyu was 20 years old, he received his father’s inheritance, an 18-year-old great-grandmother who was incredibly beautiful.

Li Xianyu: “Great-Grandma, why are you so young?”

Great-Grandma: “That’s because I died when I was 18 years old.”

Lin Feilu, or better known by her nickname—Green Tea Princess, was the best of all the scheming b*tches that the world had ever seen. She was the Oscar-winning actress among the masses with real life as her stage. Acting coy, slandering, feigning innocence, or playing the saint, she aced it all. Simply put, she was the proverbial villainess.

Ah, but retribution came way too early for this malicious personage and she died on her 27th birthday.

In death, Lin Feilu reflected on her career of 20 years as the Green Tea Princess. She was full of regret and remorse over the life she once led. She vowed, if there was an afterlife, she would atone for her misdeeds and be a good person.

She transmigrated into a five-year-old princess of the Dalin Dynasty. In the name of family, she had a sickly mother disfavoured by the emperor, a mentally challenged and daft older brother.

Her life was constantly in danger, with having little to eat and trying to stay warm.

The living environment was very harsh.

Lin Feilu, who wanted to be a good person: … You forced me! Sorry, I can only activate my unique skill.

Harem fight? Striving for favor? Climbing the ranks?

Apologies, but let me show you what it means to be slaughtered by a maxed out player.

Note: “Green Tea” is a woman who presents herself as innocent, sweet, and kind but is very scheming and calculative in reality.