I Don’t Want the Obsession of a Twisted Archduke - Chapter 10: Marina (1)

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.

Jiulong Continent, ancient times had Nine Dragons!It is said that one who obtains a dragon can stand above billions of people; one who obtains nine dragons shall become the ruler of the continent!Young Yun Xiao, in an attempt to save a treacherous individual, suffers severe injuries to his meridians. However, he experiences an extraordinary twist of fate and rises from dire circumstances. He merges with the soul of the Dragon Sky War God and is reborn, thus beginning his own legendary tale of defying destiny.“Eh? Isn't this a parasitic wasp?”“Who says it is a parasitic wasp? Have you ever seen a golden parasitic wasp?”“Even if it is golden, it's still a parasitic wasp!”“No, it is a dragon!!!”

After the battle, the beautiful senior sister shyly raised her face in front of you and slowly closed her eyes. At this time, you…

Eh? The choice this time was too simple. Of course, it was four.

Ji Ling, who was transmigrated into the notorious body, after settling the foreign debts owed by the original owner, was persecuted by peach blossom debts before, and then had a mother who wanted to exchange her for money.

Suddenly, in order to repay her kindness, Ji Ling married her benefactor’s grandson, an elderly young man, in a flash marriage.

In the days after marriage, she summed it up in one sentence: My daily life with the face-blind old rooster.

Gan! !

- Description from novelbuddy