MTL - For Thousands of Years, My Weakest Brother Has Become a Demon King (1000 Years Later, Even My Weakest Follower Has Become A Demon King) - Chapter 313 shear

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.

After transcending to a new world, Ye Xuan miraculously obtained the Swallowing System.

【Ding! Congratulations on unlocking the EX-level talent – Traveler]

Chen Luo has successfully unlocked his talent after completing a thousand small daily tasks.

After unlocking talents, you will get rewards for completing missions, including original stones and skill rewards.

[Mastery of household appliances], [100% stabbed with bare hands], [100% repayment by the fox]…

As more and more commissions are completed, Chen Luo has more and more strange skills.

However, the skills are strange and some Chen Luo can still accept it. The most distressing thing for Chen Luo is that some people’s commission rewards are getting more and more wrong…

Mebius, do you want me to study with you? Can! But why would the reward be a memory?

Gan Yu, do you want me to work overtime with you? No problem, but why is the special reward a seven-seven? Where did you get it?

“The entrustment rewards they give are really getting more and more wrong!” Chen Luo complained while teasing the pink-haired fox he picked up.

- Description from novelbuddy

One day, Emperor Wu Ling discovered, every night he would become a stone, kept on the jewellery box of a lady, embarrassing beyond embarrassing.

One day, Zhao Jin Yu discovered, the stone on her jewellery box could actually speak! Awkward beyond awkward.

This stone had a malicious tongue, harsh, two-faced and indifferent, Zhao Jin Yu itched to throw it smashing it to pieces…, who knew one day, wanting to save herself she used it to block a sword, it really did shatter, she cried for a very long time.

Again one day, Zhao Jin Yu was drafted into the palace, she discovered unusually, the emperor was like this he had a malicious tongue, harsh, two-faced and indifferent…

- Description from Novelupdates