Apocalypse: God-level Zombie Synthesis System - Chapter 2046: Slaying the Tier 2 Heavenly Emperor-level dark race

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.

Ever since He Mulan, a 28 year old forensic investigator, transmigrated into the post-army civilian Hua Mulan’s body, she’s been under a lot of pressure. Unlike the folktale ending, there are no flowers or applause to be found here. After leaving the army and returning to her hometown, word by the countryside has painted the now 32 year old Hua Mulan as a homicidal maniac, an old hag, and a freak of nature, among other nasty things. Between piecing together Hua Mulan’s scattered memories, grappling with her fellow villagers’ prejudice against her, and fending off Mrs Hua’s attempts to match make her, He Mulan has her hands full. All He Mulan wants to do is protect Hua Mulan’s body till her soul comes back, but fate has other plans…

- Description from Novelupdates

Yang Yi, along with everyone else, is thrust upon a Maritime Survival Game.Some lucky individuals possess special ships; the Iron Heart is armed to the teeth, the Swift Wind is so fast it’s almost invisible, and the Ironhead charges forward with a massive ram.Only the Nightmare, Yang Yi’s ghost ship, has strange and gory elements.The protagonist’s journey won’t be smooth sailing — this is not a story for the weak-hearted.

A boy who lost his love for Formula racing after his father died on track, bringing calamity to his family. Left to care for his mother and sister, Luca does all he can to make ends meet. But it seems that every step he takes keeps pulling him back to the asphalt, and one sudden endeavor changes his life completely. [SYSTEM INITIALIZING......] [SYSTEM MERGING COMPLETE!] [Congratulations, you have attained the Formula 1 System] Luca rekindles his love for Formula racing as he strives to find his footing in this world. Rivalries and conspiracies may try to weigh him down, but Luca is determined to emerge victorious. [THE FORMULA 1 SYSTEM, A SYSTEM THAT WILL HELP HOST BECOME THE BEST RACER IN THE WORLD]