World of Women - Chapter 37Book 3:

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.

Li Wanqiu didn’t like Ji Jinyan’s restrained, sexual and serious appearance, and set a flag when meeting her for the first time: “I’m not interested in people older than myself.”

I thought she would be furious, but Ji Jinyan not only didn’t feel displeased at all, but just smiled lightly, as if he was looking at a three-year-old child, as if he didn’t take her seriously at all.

Li Wanqiu was unhappy, recognized that she was not the same as him, subconsciously wanted to stay away, but was always inexplicably involved with her, guided when she lost her way, hugged by her when drunk, even if she was on a business trip, she lived alone next door.

At a banquet, Li Wanqiu got drunk again, dazedly hooked Ji Jinyan’s collar and started provoking, but didn’t want to be taught by Ji Jinyan’s hands clasped instead, with deep eyes.

Every word, Li Wanqiu blushed immediately when she said it, she was stunned for a while before she realized, and asked her with tears in her eyes: “What did you say, you are called Jinyan…”

Before she finished speaking, she was kissed on the lips by the person in front of her. Seeing her raise her eyebrows and chuckle, she opened her lips and said slowly: “That’s right, I sincerely say that I do abide by it on weekdays.”
“But being cautious has nothing to do with me.”

Later, Li Wanqiu finally mustered up the courage to pass a small note to ask her, “Do you hate me?”

That night, she received a bouquet of blooming daisies, and there was a piece of paper hidden among the flowers. When she opened it, the word Hate was crossed out secretly and replaced with a sincere confession.

–“no.”

“It’s too late to like you.”

Age difference, Gong and Shou are 7 years old, black-bellied and introverted boss Gong x Fried-haired Tsundere Miss

[Seeing you, I lost my soul, and I will give you all the thousands of stars and the tenderness in my heart. 】

Content tags: Huanxi Enemy Face Slap Inspirational Life Sweet Articles
Search keywords: Protagonist: Li Wanqiu, Ji Jinyan ┃ Supporting role: Next door “The Cannon Fodder Female Supporting Played Off After Seeing Through the Plot” Please accept it in advance, thank you everyone! ┃ Other:
One-sentence introduction: I have fallen
Conception: expressing love can transcend everything, make two people make progress together, and become a better person who contributes to society and has a sense of responsibility

- Description from novelbuddy

Ethan Cross was a politician serving as the Secretary of the Department of Energy in the United States of America. He was also an engineer and a scientist prior to his position, to which he was hailed as a “King of Technology” as he was able to invent revolutionary technologies one after the other.But his life was cut short when the vehicle he was in was rammed by a truck from the side, and immediately after, he awakened in the body of a royal prince, Bruno de Elysea, who was a complete opposite of Ethan in terms of knowledge and capability.One thing he noticed is that in this new world, everything was so backward. Technology and politics. He desired to change them but by doing so, caught the eyes of those who opposed it.

I Became Hades, the God of the Underworld from Greek and Roman Mythology