MTL - Time is slow - Chapter 123 wait

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.

Su Mo, a young man of the modern times, transmigrated to the world of martial arts.The sole survivor of the declining Su family, he inherited the Ziyang Escort Agency, a courier service that was on the brink of collapse.Su Mo was determined to restore the family business to its former glory, but he was young and inexperienced. And the martial arts world was fraught with dangers and intrigues!Unexpectedly, a system popped up that rewarded him each time he completed a courier mission.With this reward system, Su Mo entered an unprecedented realm. He mastered the Longxiang Wisdom Divine Skill which transformed his internal Qi and gave him boundless energy and stamina to accomplish his missions.Still, troubles came knocking on his door as he embarked on his missions, from escorting a benign scholar to delivering a mysterious brocade box for a dying man.Could Su Mo avoid getting tangled in other people's affairs? And would he survive the storms and gain a foothold in the treacherous martial arts world?

Shen Yu's world is facing the apocalypse. With the help of his Gray Mist Space, he could do good things such as saving lives to gain more gray mist and use it to do everything he wants to do. And what's more, no one but him can survive in the Space. However, this time, two figures walk out of the Space, and when they spin around, Shen Yu is shocked, because the two figures are all him from different worlds.“Your world is facing an apocalypse too?”“Indeed.”

Anger. Pain. Desolation.