MTL - Six-Year-Old Child, Baojiao, is Busy with Kingdom-Building - Chapter 440 Rong Yan came to the door

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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“Doctor, there seems to be something wrong with my mood.”

“There is a clown in the West Side Circus, he can make everyone laugh, I think he can help you.”

“But, doctor… I’m the clown.”

“…”

This is a fantasy world after the cataclysm, where countless underground cities left over from ancient times are buried under the misty land.

There are traps, monsters, and different-dimensional spaces in the dungeon, as well as taboos of ancient gods and legends of countless treasures left over from the past.

Calamity, steam, curse patterns, ancient relics, playing card sequences with extraordinary magic power.

Remnants of the Old World, Relic Asylum, Poker Brothers, Coven, Fire Pirates, Walls of the World…

In the shadowy corners of the world, a treasure hunter wearing a clown mask walks alone in the dark.

He is Joker Ji Xun, the King of Disaster Cards!

PS. For those who are short of books, you can read the 300W+ Wanding old book “Mechanical Alchemist”.

- Description from novelbuddy

Emperor Gabela: Imperial legions are unstoppable on land.

Great Orc Chief: All the warriors of the tribe can count as ten.

Jade Realm Elf King: The forest ranger has never missed a shot.

Chairman of the Horn Bay Alliance: The alliance fleet is the undisputed ruler of the sea.

A mysterious organization: The prophesied era will finally come.

Paul Grayman: I am not targeting anyone. Everyone here is rubbish.

Start the journey of guns and cannons crushing the low-magic plane…

(This is an old-fashioned story about climbing a technological tree in another world to farm for hegemony. The author has limited knowledge and may make some mistakes in technical details. Criticism and corrections are welcome)

- Description from novelbuddy

This is a story about Gong Lixin who was the young master of an ancient underground palace in the ancient times. He was raised by his master and forced to partake sexual relationships with numerous people to cultivate his Yin Body. His master who has a Yang Body was going to absorb him after he has reach a level to become stronger. MC refused and killed his master also dying at the same time. Then he transmigrated to the modern time and thinking he will enjoy peaceful life, the end of the world arrived.