Awakening: My Yandere sister is obsessed with me - Chapter 55: Childhood Girlfriend

A decade ago, the first dungeon gates appeared, but some vanished before they were ever conquered. The MC, a low-rank hunter, awakens the Lost Gate System, granting him access to these forgotten dungeons where legendary monsters and artifacts are trapped. Each completed lost gate grants him absurd power, but also reveals terrifying truths—these dungeons are prisons for ancient beings who want revenge.

Outer Sect Disciple Chen Yu, assimilates within his body a fiendgod heart.

The heart, is the backbone of life, the human body’s fatal vital point. And it can be said that Chen Yu’s heart is actually his strongest defense point, and permits him to overtake demonic beasts, or divine beasts unlimited potential.

Henceforth, he steps onto the stage and surges forth on a magnificent scale, in a heart-rending mysterious journey.

Talented as a cloud, an unparalleled supreme talent.

10,000 races glorious, cross boundary battles.

Only my heart, eternal!

- 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.

To exact revenge on her fiance who cheated on her, Xing Shu plotted against her fiance’s uncle, Cheng Lang. “Was my nephew unable to please you?”

On a large, messy bed, Cheng Lang pinched Xing Shu’s chin. The black Buddhist bracelet around his wrist swayed from side to side. Everyone said Cheng Lang was a religious man who stayed away from women.

However, after sleeping with him for a night, Xing Shu expressed how it was actually easy to manipulate him. She only needed to say sweet things to him in a soft, gentle voice, and he’d give her anything she wanted.

“Mr. Cheng is only putting on a show with Xing Shu. He’ll dump her very soon!”

“Xing Shu is a shameless woman. Mr. Cheng would never fall for someone with ulterior motives like her!”

Everyone in Jing City waited for her to make a fool of herself, but nobody knew how Cheng Lang pinned her against the bed at night. “Xing Shu, mention getting a divorce again if you dare.”

Ever since then, Cheng Lang, a man who once belonged on the altar, was brought down by Xing Shu. He experienced what it felt like to be in a relationship like a normal person, and he found joy in it.