THE Knight's Hidden Princess - Chapter 28: Another One?

This is a cliché story about two young people saving the world.

Bathed in the love of her imperial family and her husband, Yun Shang was a spoiled princess and the envy of many at the Royal Court. Her life had been perfect right up till the moment when she realized that everything was just a sham, a ruse designed by the Empress to ruin Yun Shang. After enduring bitter treachery and being poisoned, Yun Shang died with a broken heart and an unfulfilled vow of vengeance. As if God was answering her final request, Yun Shang found herself reborn like an immortal phoenix. She was eight again, and all her memories from her previous life remained intact. The others, however, did not remember the events leading up to her death. Determined not to repeat her mistakes, Yun Shang planned to rain hellfire onto the treacherous, backstabbing villains for all the heart-wrenching pain they had once inflicted upon her. He was the handsome and smart prince of the Ning, who was revered as a battle-hardened general that knew no match in the world. He had thought he wouldn’t settle for anyone until she showed up. A seemingly innocent young princess and a gorgeous prince. Where would their relationship lead them?

- Description from Novelupdates

After witnessing her fiancé sleeping with another woman, Su Yu got herself drunk at a bar out of sadness and rage. At the end of the night, she accidentally slept with a ‘poor scoundrel’. This poor scoundrel was stubborn, always hounding after her to take responsibility after their night together. Pei Tianlin said, “You took my first time, so you should take responsibility.”Su Yu flew into a rage. “That was my first time too!” Pei Tianlin retorted, “Then I’ll take responsibility. Let’s get married.” Su Yu was flabbergasted. “Dream on!”

She had a feeling she was being tricked by the poor scoundrel, but he didn’t want money or assets. He just wanted a marriage certificate. Su Yu gritted her teeth in anger. “It’s just a marriage certificate! Sure, let’s go get it!” When her fiancé heard that she was marrying a poor scoundrel, he kept trying to persuade her.

“Yu Yu, I know that I hurt you, but you can’t ruin yourself by marrying a poor scoundrel out of spite. If you’re willing, I can marry you.”

Su Yu scoffed. “Go marry your mother!”

Who knew that on the second day of Su Yu’s marriage to Pei Tianlin, countless jewelry pieces, diamonds, high-quality custom-made clothes, luxury cars, and deeds to extravagant manors were delivered to Su Yu. The ‘poor scoundrel’ suddenly became a domineering CEO who spoiled Su Yu to no end.

Rumor had it that Pei Corporation’s mysterious CEO, Pei Tianlin, was a germaphobe. But when Su Yu was eating grapes, he obediently extended his hand to catch the grape seeds she spat out. Rumor had it that Pei Corporation’s mysterious CEO was aloof and difficult to get close to. However, he was nothing but gentle in front of Su Yu. Rumor had it that Pei Tianlin was a fair and unbiased man. But he would break the rules just to protect his wife, Su Yu. Justice and law were nothing compare to his wife!

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.