Dragon Tamer - Chapter 370 - 372: Ancient Ape Dragon

Our straight (?) bottom woke up ten years into the future and found himself on the bed of his childhood friend… At the start, the bottom was shocked to his very bones, but he soon quickly accepted this premise and found the whole situation to be rather amusing. Precisely then, the bottom once again went back to his timeline — back to when he and the top were just platonic childhood friends.

Landmines include but are not limited to: Sweet & naive bottom, a president story, logic is dead, slow-progressing romance, the protagonist’s name has too many character strokes, the names are hard to pronounce, too many gay characters…

- Description from novelupdates

After finding an injured imperial big shot in a cornfield, Qiao Jing took him home and performed full-body surgery on him.When he woke up, he searched all over the world for the daring woman who had done something audacious to him. He searched the entire Imperial Capital, only to find out that the person was actually his wife from the countryside. Not knowing the truth, General Zhan was disgusted. “After 100 days, we're getting a divorce!”The medical expert said, “Master, there are still 90 days left until the divorce. I know a prince from the empire who has always wanted to meet you.”The agricultural expert said, “There are still 60 days left. The position of my granddaughter-in-law has been vacant.”The famous actor said, “Just one day left. The engagement ring is ready.”General Zhan couldn't bear it anymore and jumped out, pulling Qiao Jing in his arms. “You performed full-body surgery on me, and you still want a divorce?”Qiao Jing replied, “We agreed on getting a divorce in 100 days. Aren't you a responsible man who'll keep his word?”General Zhan said, “I am, but... I just want to be responsible for you...”Nine months later, the onlookers thought they had divorced. But to everyone's surprise, General Zhan appeared with Qiao Jing, who was pregnant with triplets, leaving everyone stunned!

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.

[Mature Content!]In the heart of a bustling metropolis where ambition and dreams collide, Ella, a talented yet struggling artist, finds herself facing a crushing blow. Her world shatters as her ex-boyfriend exchanges vows with her former best friend, a betrayal that leaves her feeling humiliated and lost.Desperate for a change, an escape from her heartache, she impulsively agrees to a marriage of convenience with Damien Stone, a mysterious and enigmatic billionaire CEO. Damien, needing a temporary wife to appease his demanding board of directors and secure his position, sees the arrangement as mutually beneficial. As they enter this calculated agreement, both with their own hidden agendas, an unexpected spark ignites between them.Amidst the carefully constructed facade of their marriage, a genuine attraction blossoms, challenging their preconceived notions and altering the course of their lives in ways they never imagined.