Reborn: Instead of Chasing the School Beauty, I Chased Her Mother - Chapter 3 - 00 Do you know Oedipus?

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.

Just as nuclear weapons are merely a by-product of science, immortality is but a small gift in the pursuit of the Dao.The patriarch of the new method, the great sage and virtuous teacher, Zhen Fa Zhenren, the strongest cultivator in ten thousand years, is recruiting personal disciples. The reference books are as follows:“Topology in Talismans—Starting with the Little Rain Talisman”“Artificial Intelligence Research in Magical Artifacts: A Preliminary Exploration of Artifact Spirits”“Elemental Decomposition of the Nine-turn Golden Elixir”“Basics of Formation Pathways”Note: Preference will be given to those who have published papers in the Journal of Immortal Dao.

In the foreign world, the martial artists dominate the world and the sword of the emperor controls the fate of hundreds of millions of lives! Long Yu, the number one killer on Earth, after dying, takes rebirth in this new world in an aristocratic family of martial artists but faces rejection because he is unable to practice martial arts.

- Description from Novelupdates

She was an empress who had been immersed in the inner palace for thirty years, yet she died silently in the cold palace.When she opened her eyes again, she had become the well-regarded wife of a prominent household.Yan Dai stared at her rival in confusion and asked little uncle: “I’m the official wife. As long as I’m still here, she’s just a concubine even if she enters the door. How dare she overstep her bounds and make trouble for me? Does she want to die?”Huo Shaojie, deceased.Yan Dai looked at her sister-in-law innocently: “Give birth? Since she’s a concubine, the children born to a concubine should be raised by me, the official wife. Why would I torture myself by giving birth?”Sister-in-law, deceased.Yan Dai looked at Huo Shaoting, holding a small notebook and earnestly asking him: “Husband, how many concubines are you planning to take? Let me make some plans for you…”Huo Shaoting: “???”What is taking concubines when you already have a wife?