Black Tech: I Build a Commercial Empire Across Two Worlds

Such rubbish. I vomited. Rubbish. The protagonist doesn't have a long brain at all, and the author, what the hell did you write? In another world, there was a shortage of food and water, and riots broke out, so you just took nothing and generously carried rice to exchange, like a fool. You take some outdated technologies from the future world and make them modern. It only sells for 5 billion, are you kidding? And some countries are fools. An ordinary one. As a college student, your company has gone bankrupt, but if you suddenly get new technology, even a fool will doubt what you got. And you wrote that other people are using honey traps to obtain technology. Show me what the fuck you are doing. It's disgusting.