I am a Gao Fushuai Villain - Chapter 212 Chen Yu’s heart! Become his knife forever!

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.

The worst thing that Shui Ruoshan think he ever did? He wrote the story of “The Strongest King in History”.

Takahiro Nao, a 25-year-old burdened by crushing debt and driven solely by his love for his struggling family, meets a tragic end—until a mysterious Goddess of Benevolence offers him a second chance: reincarnated in another world, and his efforts there will provide for his family back on Earth. Awakening in the body of Naoki von Blackmore, a disgraced “Failed Hero,” Nao is thrust into a realm of sword and magic, monsters, and war, tasked with the impossible mission of defeating the Demon King. With newfound powers, a shadowy past, and the weight of two worlds on his shoulders, he must battle not only relentless enemies but fate itself. Blending emotional depth, thrilling action, moments of humor, and a spark of romance, this gripping isekai adventure asks: how far would you go—and what would you sacrifice—for the people you love?

He is the Lord of the Realm, he is the Supreme of the Realm, and the Celestial Buddhas are the ministers.

After the fall of the earth …

Fan Ruoxi : Feng Chen, people should hug …
Chen Ruolin : Feng Chen, everyone wants to kiss …
Liu Ruyan : Seal the dust, hurry up and roll over the aging mother, the aging mother must hold up
Li Bingbing : Shao Feng, his mother’s waist is sore, others have to rub
Feng Chen : It’s called Mao. Can’t come one by one?

- Description from 69shu