Divine Doctor: Daughter of the First Wife - Chapter 36 – An Shi Arrives

After annihilating Han, Zhao and Wei empires in succession, the dynasty of Qin is ushering in an unprecedented flourishing age with powerful cultivators emerging endlessly. People take pride in being part of the Qin dynasty. However, Ding Ning, a young lad of humble origin in Changling, Qin, is determined to subvert this dynasty and kill the emperor who breaks in the Eighth Realm.

- Description from Novelupdates

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.

Travel across different worlds and become a fallen aristocratic lord. With the help of the proficiency panel, you can start your liver experience with the ancestral knight breathing method, follow the wizard’s footsteps step by step, and embark on a bizarre and mysterious journey.

- Description from novelbuddy

Lieutenant Reia a fox girl and a squad leader, comes back from a highly dangerous mission that involved the retrieval of a highly confidential file.Reia looked into the files themselves while on the mission and discovers a blueprint of a generator for a new source of energy that could potentially wipe out the entire world. Upon returning to her quarters she tries to figure out what the military plans to do and how much time they have before they need to leave.However, the military already made their move and sent someone to assassinate Reia and her squad. Reia knowing exactly what they were here for decides to push forward the plan to run away from the military. Killing the general that came to kill them sets off the military to hunt Reia and her squad forcing them to leave.Reia and her squad then attempt to escape but while they are escaping, the middle of the military base began to erupt. Massive cracks formed across the entire military city, and then these cracks began spewing green lava.This green lava had an effect causing everyone that was touched by the lava to turn into a mutant. Half humans became a much bigger version of their animals and humans became an elongated version of themselves. Their bodies would turn into a black oily slime substance and lose all logical thought.Reia and her squad manage to make it to the outer city without being infected but were separated in the process.Now being separated each of the members must survive on their own and find a way to regroup.Reia knew how strong her squad members were and believed they could survive, but now it was her mission to find her members again and find a safe place to survive the apocalypse.