Repugnant Gateway - Chapter 9

Tian Long, an orphan without much of a life in both his thirty year long life and lifespan!
To him, a single opportunity was displayed to transmigrate into another world with his Death Book!
"What's this? Is this the body of a three year old? Davis? Is this my name from now on?"
Finding himself possessing a small child, he becomes inwardly conflicted before he faces the truth and his reality!
Young Davis finds himself as the legal heir, the Crown Prince of the Loret Empire in the Grand Sea Continent, becoming a powerful cultivator in a short time...
However, is that all?
Follow his journey as Young Davis becomes a full fledged death's advocate while embodying into the Divine Emperor of Death in the world of cultivation!
"Mn? The route to become the Emperor is a given? Nah, I still don't want it..."
"Oh? I'm courting death you say? Unfortunately for you, death is already my woman..."

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.

After transcending to a new world, Ye Xuan miraculously obtained the Swallowing System.

The new book has been opened “After Rebirth, Your Majesty, She Was Slightly Irritable”

full level gangster reborn female honor

The dilapidated thatched hut is poor and destitute, plus the acrimonious and mischievous father who regards money as his life…

It’s really not an ordinary bad heart…

fortunately! The caring, gentle and virtuous little husband is not bad!

- Description from novelbuddy