Lord of the Sky City - Chapter 13 - 12 Great Invention?

In the last life, Tang Mo accidentally lost his space jade pendant when the apocalypse opened, and lost his biggest golden finger. Later, he practiced his abilities, lost his relatives, and was ostracized. He played a good hand of cards all his life. , and finally died in the mouth of the alien beast.

Opening his eyes again, Tang Mo was reborn and returned to the week before the end of the world, and all the tragedies have not happened yet! How will she seize the opportunity to walk out of her own path to become a doomsday powerhouse?

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- Description from novelbuddy

A world only I know of, now I will take it all for myself.There’s no kind soul here willing to share and eat nicely with others.Only the ruthless one who will devour it all alone exists here.

The world’s top level hacker, Shi Lei; due to him hacking the world’s top military powers during a joint exercise and attempting to steal information from them, ultimately leads him to get sold out by his own organization. This act eventually caused his own death by a missile bombardment.

God was playing a joke on him and allowed him to return back to six years ago, the autumn season of when he was still at his university. Being given another chance, plus the fact that he retained his ability as one of the best in hacking technology, Shi Lei decided to change his life! During his previous life, he was only an assassin in the dark. Although such an existence made people afraid of him, he would have to always hide within the shadows. In his new life, not only does he want to be an assassin in the dark, he also wants to stand openly in the middle of the world stage. Creating a world-class super enterprise, he will single handy change the whole world!

- Description from Novelupdates