My Weak Beasts Are all SSS-Ranked - Chapter 15: Shampoo is complete

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.

As a snake catcher, Xu Ying has always been honest and diligent, until this day, he caught a different snake…

On the first day of March, the land of China was full of incense, and the statues guarding various villages, towns, cities, states and counties woke up one after another to enjoy the sacrifices of the common people.

However, from this day on, the world has been in chaos.

This book is also known as “Ninety-six Cultivation of Immortals”, “Zero Zero Seven Also Cultivates Truth”, “Inner Volume”, “Rolling to Death”, “No one TM wants to fly”, “Good Pit”, “The Big Pit is Deep”, “Help Me Up” ” At the age of thirty-five, my fortune came” and “The Appearance of the Great Demon King Xu” and so on!

- Description from novelbuddy

An RPG gamer who played the realistic VRMMORPG ‘The Amber Sword’ for years, finds himself teleported to a parallel world that resembled the game greatly. He takes on the body of an NPC who was fated to die, and with the feelings of the dying NPC and his own heartrending events in the game, he sets out to change the fate of a kingdom that was doomed to tragedy.

- Description from novelupdates

When the sky shattered and dungeons fell upon the world, humanity awakened Hunters to fight the monsters within.Ethan Vale did not awaken.Mocked as useless and treated like baggage, he survives by working as a dungeon porter — until the day his team abandons him inside a collapsing boss chamber.Facing death, Ethan encounters the impossible.Not a mindless monster…But a chained Frost Dragon Queen.Instead of killing him, she offers a pact.Free me… and I will become your bride.With the activation of the Dungeon Brides System, Ethan gains the power to inherit the bloodlines, abilities, and evolution paths of every dungeon boss who chooses him.But bosses were never meant to love humans.Guilds fear him. Nations watch him. Hunters hunt him.And as more ancient queens awaken from their prisons, one truth becomes undeniable:The man who marries the bosses will either rule the world… or destroy it.