Reincarnated As A Dragon With Cheats - Chapter 21: Graveyard Of Memories(4): Luck

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.

This is probably the story of a modern man who became the Seventh son of Kangxi in the Qing Dynasty. This is probably the story of how the Seventh brother Yinyou worked hard and fell in love by the way. So there is no doubt that this article is ambiguous, and it is easy to guess who the couple is.

- Description from Novelupdates

In a twist of fate, Jun Hao, a ruthless street thug known for his brute strength and sharp instincts, dies at the hand of the boss he served like a slave.

When he thought he would die, he saw a screen flash before his eyes—it was a system and a status window!

[System integrating: Become A Top Idol]

Jun Hao finds himself abruptly transported into the body of Choi Joon-ho, a timid trainee hoping to make it big in the cutthroat world of idols through “Rising Stars,” a highly popular idol survival show. In a world unfamiliar to him, where singing, dancing, and charisma reign supreme, Jun Hao must navigate the treacherous waters of an idol survival show or risk losing the life of his beloved younger sister.

……………………………………………………………

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That afternoon, Roland received the most absurd gift imaginable—his stepmom handed him a System literally.That’s right. Not a game console. Not money. A real, cheat-like System... the kind usually reserved for transmigrators and chosen ones.Except Roland had transmigrated eighteen years ago, and nothing remotely “chosen” had ever happened since—until now.The catch? It wasn’t just any System. It was the “Mother's Little Tasks” System, formerly owned by his doting (mysterious) mother. And its first mission?[Mission: Go on a blind date.][Target Options: Yukino Yukio (Mom), Yukino Haruno (Elder Sister), Yukino Yuki (Younger Sister).][Warning: Once locked, your chosen girl can never marry anyone else.][Reward: 1000 Points, one self-selected supernatural ability from Mall]Roland: “...What kind of twisted matchmaking app did I just inherit?”After reading the mission, Roland was stunned. An arranged romance at 18 was already bad—but a binding rule that prevented the chosen girl from marrying anyone else? What if he failed the mission? Would she be alone forever?“And this is supposed to be a System?”“Mom! What the hell is this mission?” Roland asked, his face darkening.“It finally triggered! All those Points I spent transferring the System weren’t wasted,” his mother replied cheerfully, ignoring his outrage.“You set this up? Why?”“You’re nearly an adult and you’ve never even dated. Of course I’m worried.”“I’m only eighteen! I have college entrance exams next year!”“Exams don’t matter. But youth without love isn’t youth at all.”“...Is that something a mother should say?” Roland muttered. Most mothers pushed their kids to study harder—his acted like grades were irrelevant.“What kind of mom does this to her own son? And why is Aunt Yukio even on the target list? That’s just insane!”“Well~, I don’t know what kind of girl you like. The Yukino family has all three types—mother, elder sister, and younger sister—so I gave you options.”