Back Then, I Adored You - Chapter 29

Cui Heng was transmigrated to another world and the system told him that the new world he was in was a high-grade Xianxia world.

At the genesis of the world, the ‘Dark God Entropy’ was defeated in the fight between the five other Gods, and was sealed.

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.

In the business world, legend has it that he’s cold-blooded and ruthless. Yet at home, he dotes on his beloved wife to the bones.

‘Why am I married to this demon?’ After accidentally provoking a certain demon, she becomes his possession. From then on, she is forced into a shameless, wanton life…

“Mr. Pei, is there anything that you’re dissatisfied with Mrs. Pei about?” a reporter asks.

Mr. Pei’s dark eyes narrows. ‘The only thing I’m not satisfied with…’

Mr. Pei answers brazenly, “Lasting for only five minutes after charging for two hours.”

Mrs. Pei’s cheeks instantly turn red and she curses inwardly, ‘This darn perv!’

The reporter asks again, “What about you, Mrs. Pei?”

Gritting her teeth, Mrs Pei replies, “Lasting for two hours after charging for only five minutes!”

That night, Mr. Pei smiles wickedly after lasting four hours. “Are you satisfied now?”