Kantan na Monitor desu - Reaper Game 03: Reversal

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.

Legend has it that the world’s most formidable man Xu Shuangtze owned a cherished portrait of his deceased wife. But no one knew that on its back was another portrait of his arch rival who Xu Shuangtze had killed with his own hands.

Sixteen years ago, the Chief of Immortal Alliance’s Department of Discipline, Gong Wei, brought a blade with him on the Immortal Ascension Platform. His assassination of Xu Shuangtze failed and he was slain on the spot by the sword named No Way Out.

Sixteen years later, Gong Wei opened his eyes and found himself reborn in the body of a beautiful fool who even had to kneel down when talking to Lord Xu.

This was not the only disturbing thing for him.

Because of his ravishing good looks, remarkable power and status as well as his premature death in his previous life, he was now the beloved muse of countless writers. Books and stories featuring him as the main lead to all kinds of relationships were circulated far and wide. Even among the famous sects there were rumours of his forbidden encounters with every sect leader…

- Description from Novelupdates

Luo Jun is a glorious little security guard, and also the best one, there is no one!

In the prosperous city, Luo Jun is like a fish in water with super skill and extraordinary wisdom.

The enemy was fierce and broke it with his fist.

The enemy is cunning and breaks it with wisdom.

However, the beauty and maturity of the divorced female proprietors, the unparalleled wisdom of the Bingshan president’s sister, and the heroic appearance of the police flower sister, when their intertwined love network attacked and killed, Luo Jun’s fist and wisdom had lost its effect? I can’t break it!

- Description from MTL

[Family reading skills + cannon fodder + group pet + boss wears books + pretends to be a pig and eats the tiger + cool article]

Lu Chaochao went through the book. He was transformed into a cannon fodder who was drowned at birth and whose identity was taken over by the heroine.

The heroine killed her relatives out of righteousness and reported that her adoptive mother and grandfather were collaborating with the enemy and treason, causing the whole family to be wiped out.

The heroine takes back her mother, escapes from her scumbag father, Jin Chan, and lives a beautiful life together. Only Lu Chaochao and his whole family are stepping stones.

Lu Chaochao looked at his mother who had been brainwashed for many years: “Mom, your beloved husband is waiting for the birth of a child outside the house.”

The love brain mother is awake! Lu Chaochao looked at his disabled elder brother and sighed: “Brother, you are being abused, you are so beautiful, strong and miserable! Fortunately, I can heal your leg!”

Turning around, the eldest brother hit three yuan in a row, trampling all the talents in the capital under his feet. “Second brother, what you believe is inhumane. Your best friend is Daddy Scumbag’s concubine! ”

“Third brother, you were deliberately raised to be useless. You are uneducated and have a gambling habit. In the end, you became a human pig.”

Lu Chaochao complained, realizing that the whole family had changed their fate against fate.

The scumbag was divorced, and the three brothers became the best among men! Even holding a milk bottle in her mouth, she is admired by the whole world!

- Description from novelbuddy