Dear Mr. Shi - Chapter 823 - I also want to help you 3

Li Jing, who is unemployed in a first-tier city, obtains a system where enjoying life can double the amount of money spent.[Congratulations, host for spending two thousand yuan to enjoy gourmet food, positive emotion one star, return ten times the consumption amount of twenty thousand yuan.][Congratulations, host for spending fifty thousand yuan to stay in a luxury hotel, positive emotion two stars, return twenty times the consumption amount of one million yuan.][Congratulations, host for spending one hundred thousand yuan to enjoy the pleasure of purchasing luxury goods, positive emotion three stars, return...]By becoming wealthy through the system, Li Jing finally experiences the joy of life, luxurious spending, perfect service, and transcendent status, all of which make him deeply understand the power of money.Especially those once unattainable goddesses, due to Li Jing's improved economic level and upgraded social circles, wonderful and unforgettable stories centered around him occurred.In the top floor suite of the world's tallest building, Li Jing stands with a wine glass in front of the floor-to-ceiling window, overlooking the entire city, and sighs:“People without money are merely alive.People with money truly live.”

Su Ling was reborn before the end of the world, and got a system that can strengthen everything.

In order to survive, she made the greatest preparations in the shortest time, took revenge on the scumbags and scumbags, and then embarked on a new journey.

On the way, she met Sheng Hongye, an all-around handsome guy. At first, she just wanted to live a good life, but later she found out that she had somehow become the hostess of a new type of tribe.

“Sorry, I’m not interested in the hostess.” Su Ling said with a cold face.

A certain man: “Good boy, then let’s work on the infrastructure.”

Su Ling was annoyed. “Go away, is there anyone doing infrastructure work on the bed?”

A certain man: “Hey, I know you’re tired, so let’s be your successor.”

- Description from novelbuddy

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.

Fang Shen’s eyes undergo perplexing changes after being hit by thunder. The change helps him acquire inscrutable and powerful life-death eyes which are able to launch many functions like clairvoyance. With the superb and magical eyes, he can dominate the world.

- Description from Novelupdates