Low Dimensional Game - Chapter 5 - The World of Insects

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.

A frail and often ill son of a wealthy merchant unexpectedly embarked on the path of cultivating immortality while seeking a way to prolong his life!During the Tang Dynasty’s Golden Age, the world was at peace, the climate was favorable, and the people lived in tranquility.One thousand years later, demonic beings devoured the sky, demonic ghosts rampaged, and sorrow-filled cries resonated everywhere.The Journey to the West reappeared, the Great Sage fought against the heavens, the Heavenly Stem descended to the mortal world, reincarnating anew.Mysterious transmigrations and reincarnations, reality and illusions intermingling, truly extraordinary!Is it just a dream predicted in the prophecy? Or a reality that has yet to occur?Can he eradicate the predestined demonic barrier, eliminate the catastrophes of the Three Realms that have yet to occur, and save the people from utter destruction?

Gu Mingxi and Pang Qian were next-door neighbors, classmates, and deskmates. From year-to-year, even when the class seating was rearranged, they would still be deskmates. They grew up together like a pair of brother and sisters despite having different parents; if it was someone else, then their parents would probably have already arranged their wedding. However, Gu Mingxi was different.