Mia is Not a Trouble-Maker! - Chapter 714 - : Only a Fool Would Believe It

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.

Everyone in the entire imperial capital city B knows that, in recent months, there has been a fortune-telling stall with a sky-high pedigree.
Break the marriage, control the universe; talk about misfortune and good fortune, test the secrets of the sky; comment on the eight characters, change the way of luck… simply say that you are alive, you will not die, say that you are dead, you don’t want to live!
The reason why anyone with a head and a face knows it is because the head and face naturally feel that the magic stick cannot be placed on the table and cannot be seen.
However, the wind has changed recently. It is said that the famous Bai family of the Junhong family has sought a famous magic stick for the youngest son of the sick jar!
Unexpectedly, the magic stick was very pretentious and deadly, and only said one sentence.
“I miss him, unless I marry him. Otherwise, within three months, he will surely die!”
So, the whole emperor was in an uproar.

Keywords for a god stick to marry a wife: god stick to marry a wife, blood children, one-on-one, spoil you

- Description from novelbuddy

A fair complexion can conceal three shortcomings, but being overweight can ruin everything. Gu Yi doesn't look bad, but her round plump figure always attracts strange looks from people. In her previous life, her marriage was mediocre, but in this new life, even as a plump woman, Gu Yi is determined to rise up!

Xiao Yu, who was a student from modern Earth, accidentally transports to another world and becomes the lord of a territory. Facing an unfavorable situation, he vows to take back his family business, build his new territory, kill all of those who covet his wealth, and dominate the world!