MTL - The Existence of Harry Potter - Chapter 13 got the wrong person?

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.

In the ruins after the war, the empire is reborn from the ashes.For supreme glory, it competes for supremacy in the world and aims to dominate the globe.

The fat and ugly Nora Smith is the laughingstock of the town when her fiancé breaks off their engagement.

Ling Xiao was secretly in love with a girl named Mo Qi; because of an accident, they both crossed into the ancient times.

Mo Qi who was preinstalled with the Mary Sue halo, in these ancient times, walked to the summit with a golden finger.

However, Ling Xiao continued to be exploited by Mo Qi.

After he no longer had any values to exploit, he soon became a pitiful cannon fodder.

The heavens decided to take pity on Ling Xiao.

And gave Ling Xiao an opportunity for rebirth.

After rebirth, he vowed that all his enemies would repay him with a debt of blood!

However, why have all these enemies of his, fallen into the mode of cutting their heads open?

“Hey, are you really that unremarkable person who used to follow behind Mo Qi?”

“So this dance was originally danced by you, sigh……”

“You are obviously a man, yet you move me so much.”

“Enough! Since you have taken the initiative to provoke me, then you must concentrate on me!”

Ling Xiao expressed: If you want to counterattack, then counterattack. As long as your golden finger is bigger than Mo Qi’s.

But how did Mo Qi’s Mary Sue halo end up in his body! He is still a straight man who likes beauties! He definitely, definitely doesn’t want to turn bent!

- Description from Novelupdates