I Became the Little Demon in Leading Role's Family - Chapter 610 - 619 If Only There Was No Bai Zhi

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 Sacred Lust Continent, where hundreds of Power Clans flourish – each boasting their unique Sacred Powers – lies the Starlight Family from Southern Lust.

Within this clan, Han Li was born without a Starlight spark in his soul; nobody cared for him except his Mother, Yue Li. Only she had been his constant.

Nothing seemed special about him.

But destiny had a different plan for him. On the day of his 18th birthday, everything about him changes as he unexpectedly acquires the Demonic Lust Sutra...

But his life didn't change due to the Sutra, but something entirely different—he saw something nobody had, nobody should.

Moreover, his mom has a cheat much more potent than his?!

……………………………………………………………

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Xiao Mengxin accidentally entered the Lixingshe Secret Service.

The only ability is to accurately identify who is the hidden Japanese.

I don’t understand anything else…

As a result, I seemed to be walking astray while walking?

- Description from novelbuddy

Under the starry sky, all races compete for the front.

The human youth Ye Huan has mutated eyes.

Don’t forget, it’s just basic exercises.

Martial arts, just watch it once.

If you read the exercises once, you are cultivating.

The medicinal pill came out after watching the refining process, and it could be optimized.

Yuanguo, Yuancao, the year has increased at a glance.

Ten thousand clan exercises and secret skills, just looking at them, they become human clan exercises and secret skills.

…

Under the starry sky, Ye Huan convinces all the tribes.

- Description from novelbuddy