Douluo Dalu: Starting With Tom Cat - Chapter 4: First Encounter with Zhu Zhuqing

In this world, Planet Earth had undergone great changes and humanity is faced with extreme danger. Luckily, humans have something called the Heaven Dao software.

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.

Rae, a perverted thief with bad luck and worse life choices, was caught peeping on a couple getting busy. Naturally, he got his ass kicked—and his life ended.Or so he thought.Just before his untimely demise, Rae had one last wish: to live like a king, surrounded by voluptuous women with big booties and even bigger breasts.Turns out, death wasn’t the end. It was just the beginning. Rae woke up in a fantasy world, and not just any world, but one where he was gifted a special system. A system... with some unusual tastes.[Ding!][Quest: Drink breast milk from the source.][Litres: 0/10][Reward: Race Change from Goblin to a race of your choosing.]“Wait—what? I’m a goblin now?!”

Hulk was a pro football player, a guy who loved nothing more than clutching a pigskin and barreling through the defense like a runaway freight train. He lived for the gridiron. But he never, in his wildest dreams, imagined he’d see a pair of nipples bigger than a football. He became a giant baby, reborn with a new name: Orion. Orion was the runt of the giant litter, the weakest of the bunch. But when he turned ten, something crazy happened. He saw a strange panel – that not only displayed his stats but also helped him level up. With the panel’s help, and a whole lot of elbow grease, Orion led his giant tribe to become the most powerful in the Barren Mountains. He went from zero to hero, becoming a mighty Titan King. He was no longer the runt; he was the top dog.