I Woke Up Pregnant With An Undead's Child - Chapter 10-12

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.

“Do you wish to know what will happen if I drink from your thighs?”Salviana drew in a sharp breath before she whispered, “I might die?”“No, It is I who will die if I don't,” he met her eyes with a lustful hungry gaze, “Spread your legs for me, Fiery-wife”And that she did...~~~{─────────────────~~~~~~~~~~~~~~~~~~~~~~~~~}──Fiery is married to the demon everybody feared would destroy them someday. He is the greenest reddest flag but now she only sees white. A canvas to paint their love however she deemed righteous.~~~{─────────────────~~~~~~~~~~~~~~~~~~~~~~~~~}──The Dark Prince, the third prince, is no stranger to the fear and hatred surrounding him. Cold, distant, and possessing a gaze as dark as midnight, he is known throughout the kingdom as the demon prince. But the truth hidden beneath his pale skin is far more dangerous—he is a vampire, living among a royal family that barely tolerates his existence.Salviana, a divine lady of myth, never asked to be married to such a man. Forced into the union, she is thrust into a life where every corner holds a secret and every glance feels like a challenge. Though her husband’s cold touch sends shivers down her spine, Salviana finds herself drawn into his world of shadows and intrigue, struggling to understand the depths of his darkness.With royal enemies watching their every move and Salviana’s own hidden powers slowly awakening, the bond between her and Alaric grows more complicated.Can she survive the dangerous world of court politics, where even her husband may not be fully trusted? Or will the weight of the secrets they keep tear them apart before they can discover the truth about each other?Caught between fear and desire, Salviana can’t help but wonder: Will she uncover the man behind the darkness, or will the shadows consume them both?Married to Darkness is a seductive, tension-filled journey into the unknown, where love and power clash in a dangerous dance that could lead to either salvation or destruction.

Jiang He might have transmigrated to a world of Qi and martial arts, but the System that he got only provided him with… seeds.

Mu Zhi’an transmigrated into a world of immortals and became a supporting character destined to be a stepping stone for the protagonist. He originally wanted to befriend those heaven-chosen protagonists, but when Mu Zhi’an turned around, he discovered that the girls surrounding him were either the protagonist’s childhood sweethearts or fiancées.Most inconceivably, those girls who should have liked the protagonist all fell for Mu Zhi’an, this supporting character. Looking at the heavenly beauties beside him, one after another, Mu Zhi’an had a bold idea. He resolved to get rid of the protagonist and turn the tables to become the master himself.After finally defeating several protagonists with great difficulty and obtaining a large amount of resources, in order to enhance the girls’ strength, he shared the abundant resources with the girls around him. He originally thought that with the enjoyment of so many resources, he would surely be able to prove the Dao and become an emperor in the future, transforming and ascending as an immortal. Until one day, looking at the rolling tribulation clouds in the sky and the several empress characters reborn in the lightning tribulation, Mu Zhi’an’s eyes gradually lost their luster as he muttered, “I’m so foolish, really… I thought that after getting rid of those heaven-chosen sons, I would be the new protagonist of the world and become a powerful immortal in the future. But I never thought… it turns out they were the real protagonists all along.”