Undead - Chapter 35

A million years ago, he had traversed the Nine Heavens and Ten Earths, braving countless mysterious Life Prohibition Zones, in search of a way to resurrect that foolish woman, but inadvertently learned one earth-shattering secret after another. Thereafter, he went through nine cycles of reincarnation, strategizing over the world, casting his net across the heavens, with the Myriad Realms as his board! In this life, he had returned from reincarnation, his Qi engulfing mountains and rivers, “It’s time to close the net...”

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.

GunGun, as a national treasure(panda), was stolen by thieves and skinned. Once he woke up, he had a healthy body and lots of bamboo leaves. But monsters with glowing eyes surrounded him, most importantly they were floating, have greenish blue faces, fangs, and have no little legs?!

(⊙o⊙) Oh, the two-legged monster is here again, huh, is this bowl of food for him? These tender leaves are delicious, they should be hidden in the deepest part of the den.

There was an extra panda cub in the Interstellar Admiral’s embrace which he brought everywhere he goes. The place where a gun was once placed turned into a place for holding a basket full of leaves.

One day, GunGun became a beautiful boy.

Pouting face GunGun: Big monster I’m hungry. Huh? Where’s my fur!

The admiral’s face flushed crimson red being overwhelmed by its cuteness: “!!!!!” My darling!

******Small Theater~******

GunGun who was holding a small bamboo shoot and shivering: It’s so scary, monsters with no heads or tails are floating!

The admiral who fell from the sky: GunGun, don’t be afraid.

GunGun who was holding a little apple and shivering: It’s so scary, a glowing green skull is smiling at me!

The admiral who fell from the sky: GunGun, don’t be afraid.

GunGun who was clinging to the Admiral’s thigh with wet eyes: Ah, the corpse moved! He said that I’m cute and wanted to touch me.

The admiral who became fierce: This absolutely won’t do!

- Description from Novelupdates