Harem Streamer System: Every Crime I Broadcast Wins Me a Superheroine - Chapter 10: Ditched… Again?!

"In her previous life, she is used by her first love to send her own company into the tiger's den. She becomes bankrupt, gets kicked out of the house by her father, and becomes the target of ridicule by the family. Worst of all, she believes her best friend's lies, thinking that everything was done by her ‘husband’. Under her best friend's ploys, she almost kills him and is ultimately sentenced to prison, where she dies of depression.

Chen Yan travels between worlds, ending up becoming an honorable prince in a medieval fantasy world. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land.

Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders coming from the realm of evil.

- Description from Novelupdates

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.

of the family. He had to care for his grandparents in place of his father, show respect to his uncles, maintain brotherly love...In this life, he only wanted to breat free from these bloodsuckers, find a sugar “daddy”, and by the way, nourish his stomach.*****Song Jiawen felt something was weird. That guy from next door—who had to return to the countryside to study because his father was imprisoned—suddenly switched from literature to science and joined her class, and even moved to the seat behind her. Ostensibly, he did it so she could tutor him in physics and biology, but why did she always feel like he had an ulterior motive?*****Years later, as Jiang Yan watched the soup simmering in the pot while soothing his son in his arms, he glanced back at his wife, who was leisurely watching TV on the sofa with her legs crossed, and thought miserably, this meal ticket he had married into was proving to be quite a struggle!