MTL - Naruto’s Strongest Force - Chapter 133

Bound together by an imperial arranged marriage, Li Yuyan is scorned for her association with the ill and blind crown prince. Publicly, she stands up for the seemingly gentle and perfect prince, and he in turn protects her from criticism. Privately, she contemplates inheriting a fortune if he dies, while he considers eliminating her if she steps out of line. Unknown to all, the beauty and brilliance they keep hidden will unveil. During their wedding night, as she cures his blindness and cold ailment, but not his secret illness, she discovers the deceit. Realizing she's been tricked, she tries to flee, only to find herself trapped by him as he expresses his fascination with her.

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.

Leon Thorne was the disgrace of his house, overweight, softspoken, and dismissed as a failure before he ever picked up a sword. Mocked during the Awakening and branded an F-rank, he was expected to fade quietly from the halls of power.But he didn’t.Because this wasn’t his first life.In another timeline, Leon watched House Thorne fall, shamed, scattered and erased from history. Powerless to stop it then, he’s been given one chance to rewrite it now.Stripped of excuses and reshaped by hardship, Leon claws his way forward—through blood, sweat and silence. Now, leaner and sharper, he enters an academy where only strength speaks and legacy decides your worth.But Leon carries no crest. No backing. Just scars, a sword, and the will to shatter fate itself.He’s not looking to be acknowledged or praised.He’s going to rewrite everything.NO MATTER WHAT IT TAKES.

On the Great Land of China, forces clashed for the sake of supremacy and Bloodline Warriors ran amok; the conflict of the strong threatened to shatter heaven and earth. A young man named Lu Li—nothing more than a humble Coffin Carrier from the Northern Desert—came along with Lu Ling, his sister. The two were regarded as puny insects and bullied, but little did people know that Lu Li had the strongest Bloodline of them all in him.