My Girlfriend's Secret - Chapter 13: Don’t Look Back, I’m Kaede

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.

Caden Ryder.Having both the status of a Transmigrator and a regressor.Once a human from Earth and a ruthless domineering general of the Purple Continent.His journey through the mystical world was rough and filled with betrayals.Following the death of Emperor Rozen Riverrun and the rise of Emperor Zeraith Riverrun.Both eras brought about the rise of the Redmen Race.And the death of the Purplemen Race, in the end....After years of fighting, after years of defending the Purple Continent.It was all for nothing. But little did he know that his execution was the beginning of his journey.[Regression Alert!]Regressing back to the time when Kyle Freeman transmigrated into the body of Caden Ryder.Now amped with the knowledge of two past lives, with his determination to grow stronger.With the zeal to live the mundane and quiet luxurious life he has always dreamed of.Caden must walk the path of domination, the path of conquerors.Armed with a Primordial System. Armed with three SSS-Ranked Ultimate Skills.If he must conquer the Red Continent to live his mundane, quiet, and luxurious life.Then so be it, he shall conquer the Red Continent.With the knowledge of his past lives, walking on a path of mysteries and adventures.If there's no way. he will create a way

Majiatisi Lei En, the sole Descendant of the Heroes is the nightmare of his entire town.

The apprentice of a proud Warlock, Lei En works hard to learn his trade unknowingly causing mayhem for those around him.

So when he stood on the tower of the Supreme Wizard, shouting with a heroic flair:

”I want to be the greatest of the alchemist of the Shenji Continent!”

A resounding roar of, “Boos” from the townspeople was the only response he got.

- Description from Novelupdates

An Nuan thought that she was going to have her happy ending, marrying the love of her life when the man left her on their wedding day.“Pei Zhi Yi, the moment you step into the elevator, it's over between us.”An Nuan thought that she could stop her fiance from leaving, but that man still left for the other woman.The wedding hall was prepared and the guests had all arrived. With no groom beside her, An Nuan decided that she would marry anyone willing.“An Nuan, if you are willing, then how about considering me as your groom?”Unexpectedly, the young master of the Lin family, Lin Xiao Feng stepped forward to offer himself.An Nuan did not expect much from this marriage, especially when they both agreed that they were seeking to gain something through this marriage.Lin Xiao Feng needed someone as his wife in his political career. Meanwhile, she just needed to marry someone to get over Pei Zhi Yi. As someone who was disappointed by love, An Nuan no longer wanted to believe in love.She never thought that the marriage that she did not expect would turn out better than she had expected. Young Master Lin would pamper her and support her whenever she needed help.Wasn’t their marriage just for show?