MTL - I Became Invincible After Sweeping The Floor For 70 Years - Chapter 738 Don't be too arrogant

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.

Having reincarnated into a different world, Murong Lin found himself utterly bewildered.The golden finger system informed him that he needed to eliminate the protagonist—wait, he wasn’t the protagonist?Innocently, Murong Lin turned his gaze towards the designated heroes, a butcher’s knife clutched in his hand. Regretfully, he realized he had no alternative but to end their lives if he wished to survive.Hold on, this pig was a protagonist too? And that tree?Without any choice, Murong Lin found himself forced down the path of bloodshed.

One day, Zhang Chenfei met a car accident. Fortunately, he didn’t suffer any serious physical injuries. However, due to the impact of the car crash, his brain’s perception of the real world had turned into that of the novel that he was reading prior to the accident. The thing that horrified his wife, Jiao Qi, was… the Smart Brain, Louis XIII downloaded a series of books which meant that his husband would turn into a different character each time!

How will our adorable little wife deal with this kind of husband who seemed to suddenly suffer from multiple personalities?

This novel’s plot focuses on Zhang Chenfei’s changing personality based from the characters in the books, and how his wife, Jiao Qi, deal with every character as he will have to act in sync with whoever his husband’s character is. This is per the advise of the private doctor since treatment of this special condition was still under research.

As they act out their roles, they will gradually discover and learn more about the other, which they’ve never known in their seven years of living together.

- Description from Novelupdates

Shoved into the backseat of his father's car right after graduation, Riley Hale ended up marching toward a company building with a bagged lunch and a pen.Still in his toga, the fresh graduate never thought he’d land in the office of the continent’s top lizard, err, dragon, as his aide.And that would’ve driven any person wishing for a corporate career to tears. After all, who wouldn’t want to serve the fastest ticket up the corporate ladder: Kael Dravaryn, the infamously elegant, unhinged, and extremely overpowered Dragon Lord of the continent?Well, that would be Riley.The same Riley who didn’t expect to spend his days dodging fireballs, dressing his boss in robes more complicated than dark magic, and serving as a literal target during morning sparring.Now trapped in a job he never truly agreed to, the hardworking aide decided to hold out until it was time for his glorious resignation. But leaving a dragon’s clutches could never be easy, especially one with elemental mastery and a finger worth a private army.Yet, as Riley, who longs to quit, attempts to navigate ancient politics, wyvern threats, and other accidents (many of which are definitely not his fault), he might just hallucinate himself into seeing something beneath his boss’s arrogance and molten glares.Maybe he’d actually care if Riley got turned to ash.