Sunnie McCray 
Global Wasteland [EPUB ebook] 

All human beings are traveled together to the wasteland world, which is full of dangers and opportunities, and all of them can only survive by continuously strengthening their shelters. Wang Teng, who has just crossed over, realizes that he has awakened the gift of the Heart of Science and Technology, and comes with a technology tree!

With the enhancement of the talent, Wang Teng developed all kinds of black tech AI, Jarvis, Controlled Nuclear Fusion, Iron Man Battle Armor, CMC Armor, Dyson Sphere Using the countless techs in the tech tree, Wang Teng succeeded in getting his territory to quickly ascend to the peak of civilization! When others saw the tanks on the trading platform, they cried with gluttony!