Rebirth Of The Mighty Overlord. - Chapter 1: Prologue: Fall of the strongest!

He went from an ordinary student to a god-level master in manufacturing.
Continuously progressing, processing range from hundreds of meters to tens of atoms, processing precision from microns to nanometers to atoms and molecules, everything was possible.
Wassenaar Accord? The embargo against China? What we have banned are technologies that China doesn’t care much about. Most of the member states have to import technology from China, shouldn’t the member states have a meeting to discuss and bring in China as well?
Forbidden chip sales? Is there a mistake? We barely managed to maintain our low-end market with a large amount of subsidies, it’s already good enough that China didn’t initiate an anti-dumping investigation. President, are you sick?
Hmm, it seems like living cells can be processed precisely as well. Do you need to refine the cancer cells that you are spreading out?

- Description from Novelupdates

Ruby was a genius; however, she tragically passed away after falling from the fiftieth floor of her own company's building.When she opened her eyes again, she found herself in an entirely different world.Have you ever heard about the Ghost World? I'm not referring to the world of deceased individuals, but rather a planet.Ruby was shocked when she woke up in the body of an twenty-year-old girl who was already married and had four ghostly husbands. Unfortunately, these husbands didn't love the original owner, and the original owner treated them poorly.The first husband leaned over with a sly smile on his face and said, “You think you can leave me, pretty wife? Nope! Once my eyes catch what I like, I will get it no matter what.”The second husband angrily exclaimed, “I hate you, stupid witch! Don't leave me; your stupid husband loves you.”The third husband innocently said, “Wife, I made my special soup for you,” and proceeded to show bowls filled with blood.The fourth husband gently raised her chin and said, “Wife, I can't believe that with every passing second, minute, and hour, I'm falling for you even more.”The fifth husband, who fell in love with her at first sight, looked at the camera and arrogantly smiled. “I fell in love with someone at first sight! Get ready to grab it; I'm throwing ten thousand gems to celebrate,” he declared as the camera panned to a room filled with money and treasures.Ruby : “...” Please, someone, make me dead again.Warning:• Reserve Harem• 18+

At the end of the road, in the throes of despair and impending death, Le Yu shouted defiantly:“If you have the guts, then kill me.”The enemy sneered and said:“I've never heard such a strange request.”Le Yu died.Then Le Yu came back to life, living in the enemy's body.This is a story where being killed means possessing the killer.“Why are the ones who kill me always some enigmatic, cunning figures with complicated backstories and numerous impending quests?Why aren't there some honest, wealthy, lady-charmer winners in life coming to kill me!?”