The Ethereal Domains - Chapter 1863: Right Here

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.

Suddenly finding herself in a rural setting, Lin Caisang became the village's renowned 'Star of Wealth and Honor'. Surrounded by unique relatives, they treated her as if she were a rare panda—held preciously in their palms for fear she would fall and gently kept in their mouths lest she dissolved.Meet the exceptional relatives:The Powerhouse Father, who declared, “You want Sangsang to get married? You'll have to get past me first.”The Stingy Mother, questioning, “What does she need a husband for? She can have all the fine food and a carefree life with me!”The Sly Grandfather, suggesting, “Girls shouldn’t have to do the dirty, tiring work. Quick, call over your brother!”The Majestic Grandmother, fiercely proclaiming, “Who dares to bully Sangsang? Let them face a fight to the death with me!”The Protective Brother, assuring, “Little sister, all the good food is for you. I am not hungry!”Holding her flabby flesh, Lin Caisang wept without tears: “Let me go! I need to lose weight!” Meanwhile, the strikingly handsome, icy man next door not only protected and spoiled her in secret but also had a not-so-simple identity.....

“I beg you, please teach me how to pick up female angels!!!”
Pleaded the twelve-winged angel.

“Teacher!! How can I fool more people into my sect?”
Asked a devil in the devil world.

“Do you know how to save the family cat that died last night?”
Someone in the sky is too embarrassed and asks me quietly.

“All the angel, all the big deity, please I am not God, I am really just a summoner….”
I said painfully.

This is the story of a poor boy and how he becomes the greatest summoner who dominates the six worlds because of an accidental acquisition of Dimension.

- Description from Novelupdates

Life is unpredictable. Her husband loved her stepsister, deposed her as Empress and even forced her son to death. In that Cold Palace, she was forced to drink poisonous wine. So in the next lifetime, she made a promise to never do good deeds and help others, to never step into the palace and to never become the Empress!