All the Dust that Falls - Chapter 277: Picking Up the Pieces

She was stupidly in love with him. Because of him, she became rude and unreasonable, overbearing, jealous, insane. But he did not spare a glance to her. Married for two years, he didn’t favor her once, letting her become the laughing stock of the whole world. Eventually, she ended up in an affair, leading to her tragic death.

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.

BL manhua artist, Ti Xiao, has been single for many years. As such, he is under constant pressure to find a partner and get married. His family’s little niece shipped him together with her school’s English teacher to form a CP. The editor at work also want to introduce their friend to him. One day, a new neighbour moved in next door. He couldn’t help but notice that he seemed kind of reserved and cold. After getting a glimpse of him, he was ready to make trouble. He used his numerous ninja skills to discover his new neighbour’s identity. It turned out he was the English teacher at his niece’s school! Not only did he like his work and was his fan, but he was also his editor’s friend!

- Description from Novelupdates

Once again, as he opened his eyes, Ning Changge awakened his extraordinary insight, only to find himself reborn as an abandoned infant.Coincidentally, Zhang Sanfeng passed by and took him in as his eighth disciple.From then on, on Wudang Mountain, there was an unparalleled prodigy with extraordinary insight. While others practiced martial arts or cultivated immortality, Ning Changge aimed to forge a path to eternal life in the world of martial arts!【You studied three thousand classic scriptures, mastered three hundred inner cultivation techniques, and, with your innate inner energy, created the “Eternal Green Immortal Technique”!】【Reading a hundred volumes of swordsmanship, observing battles between peerless swordsmen, you gained insights and created the “Gold-ranked White Tiger Sword Qi”!】【You established the Immortal Sect, spread the teachings of immortality, and led people around the world to cultivate immortality. You observed the path of mortals cultivating immortality and used their inspiration as nourishment, creating the “Great Dao Elemental Infant Condensation Technique”!】【You led the world to ascend, and the world’s will rewarded you with the Supreme Merit Golden Dragon feedback. You refused to absorb it, pondered carefully, and created the “Supreme Merit Body Forging Technique”!】Martial techniques, passing them on to others…