Demon hunter's Cooking Manual - Chapter 1202 - 116: The Biggest Trump Card_2

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

Three years into Qin Yu's marriage, his wife and in-laws all hated him.

Six years ago, she signed the ten-month agreement with all her sorrows, and as agreed, she received the down payment. But when the agreed time came, the buyer did not show up to claim the 'treasure'. What was going on?Six years later, her precious son surprisingly told her, “Mommy, people might wear the same clothes or drive the same car, but I met someone today who actually has the same face as me! Can you believe it?”“Don't talk nonsense, how could someone look exactly like you?”Her son, dissatisfied, pulled his friend out. “Don't you believe me? Just take a look!”Lin Xiangwan took a glance, then, thud, she fainted, collapsing onto the ground.Who on earth... is this...?

One morning, after being bound to the system, MC started his routine of always being captured/ attacked by the ML.

It doesn’t matter if he transmigrated into the ML’s little brother (TN: Here I think brother disciple) or master or opponent, but in the end he is still forcibly taken by the ML.

After transmigrating to many worlds:

MC: Come out system!!! The heck?! Why do these MLs not love their female goddesses, but insist on doing it with me! Aaaaahh!!!

System: …. __(:3」∠)_ Don’t ask me, I also don’t know.

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