I've Gone Viral Because of a Money-Saving Variety Show - Chapter 25 - I feel that there is something ambiguous

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.

Vid: My time at Hogwarts is only seven years, and excluding holidays, that's only 266 weeks! Even if I could thoroughly read one book a week, 266 weeks is only 266 books! How many Magic Books are there in the Hogwarts library? Thousands upon thousands!Time waits for no one, so how can I not seize the time to study?! I will not allow anyone to disrupt my study environment—not even the Dark Lord!

Su Yue, a heavyweight in the assassin world, was reborn as a newborn baby girl.She thought she would leisurely live this life by eating, drinking, cultivating medicinal herbs, and playing with venomous insects… leading a carefree existence.However, her master expelled her from the mountain.Her eldest martial brother is the prince of another country, her second martial brother is the leader of the martial arts alliance, her third martial brother is a divine physician, and her fourth martial brother… well, let’s ignore him.The emperor is her father, her brother is the prince, the national commander-in-chief is her maternal grandfather, and she has three uncles. She thought she could comfortably lead an idle life, but who knew…