Did she already know what I would ask her for? - Chapter 285: Ch 284: Now things have changed

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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This is a time of great powers: The vast Persia, Sparta that was founded by force, Athens with its trade and business, Thebes the rising star, The ambitious Macedonia, The twin heroes of the Western Mediterranean, The rising Rome and so on.

This is an era of brilliant stars: Agesilaus II – the last king of Sparta, Epaminondas – the Rising General of Thebes, Philip II – the founder of Macedonian’s hegemon, Dionysius – the tyrant of Syracuse, Camillus – the Roman dictator and savior…

This is an era of contention among a hundred schools of thought: Plato – the great philosopher, Antisthenes – founder of cynicism, Pythagoras – school of number, Democritus – the encyclopedia scholar, Hippocrates – the father of western medicine, Aristophanes – the great dramatist…

What will the hero bring to the world when he comes to this age as a humble mercenary through rebirth?

No one knew that the aloof, god-like Jasper Lockwood had fallen for Chloe Sterling at first sight, secretly loving her for a long time.Chloe Sterling was found by her birth parents and returned to Crestfall from the countryside.What awaited her was not a mother's affection and a father's love, but indifference and contempt.“You're worthless, how could you possibly compare to your sister!”“The gap between you is as wide as heaven and earth!”Her heart turning cold, Chloe Sterling left the Sterling Family, only to have a flash marriage with Jasper Lockwood, the CEO of Crestfall's number one prestigious family.After marrying, The Big Boss Lockwood became a wife-doting maniac, like a besotted monarch. Everyone couldn't stand it, wondering what right a mere country bumpkin had.It wasn't until Chloe Sterling's identity was exposed that the crowd realized they were the ones who had been blind!

Entering the interstellar era, Su Tan wrote novels, became a celebrity, hosted and ate food, and began to dominate the interstellar entertainment circle.

Until one day, the strongest star / anorexia anorexia / cold abstinence emperor ate his food-long! fat! It’s up!

Emperor, “Fine, marry him back, and I will punish him personally.”

Su Tan, “? ?”

- Description from Novelupdates