Reincarnated as the third son of the Duke - Chapter 127 - From Captive to Colleague

Shuu is a member of the literary club that can’t write. One day, he gets a mysterious message on his phone from a girl called Eina, and from that impulsive contact, they begin to exchange messages. They talk of things like their shared interest in novels and grow close. However, when they try and meet, they discover a shocking truth. Eina lives… not in the present, but five years in the past! How will their love develop, parted by five years of nights…!?

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 cultivator blessed with good fortunes but known to lead a slothful life was reborn again as Chloe Jones. Upon birth, she was shunned for being born a girl and abandoned by her family. What a pitiful life! Fortunately, she was taken in by a poor family in the village.She thought she would stop leading an idle life in this life, but that was until her senior brothers from her previous life showed up. Among her senior brothers, one was the king of the law industry and another was the wealthy president of an international company. One more turned out to be a doctor who was said to have brought people back from the brink of death and the last was a famous celebrity.Originally, Chloe planned to live a comfortable life with her senior brothers’ help. That was until an unlucky b*stard appeared. Whenever the unlucky b*st ard left Chloe's side, he would develop a bad migraine and fever. It was almost as if the God of Misfortune had possessed him.Someone once commented that he and Chloe were a match made in heaven. However, her senior brothers retorted, “Begone! Don’t trust this wolf in sheep’s clothing! He's been coveting you since your previous life!”

What to do when you find yourself transformed into the vicious female supporting character in a family that dotes on the group pet?Of course, it's to keep away from the protagonist,She's practically the darling of the heavens, with a protagonist halo so strong even a dog would fall for her.Hiss, Bai Zhi said, “Can't compete, can't compete, cherish life, stay away from the protagonist.”All she wanted was to quietly make some small money and live freely, but—Group pet with tearful eyes, “Sister, come back, I'll let you have our brother.”Bai Zhi, “...” No need, I refuse.Group pet with an overflowing Mother Teresa complex, “This was all my fault; please, don't blame my sister!”Bai Zhi, “...” Look at this white lotus script; hey! Where's my knife?—Even more fantastic was when that baby-faced weak little brother suddenly appeared midway and transformed into a boss!Bai Zhi, “???”A new book has started; the Film Emperor's daughter is hibernating again. There are new book activities, sweet, sweet, sweet