I! Invent the Traffic Light at the Beginning

Su Ling traveled to a world where it only took thirty years to transform from a feudal society to a modern metropolis. This has led to various problems. The modern system is extremely imperfect and even blank in many aspects. "Traffic light system? What is that?" "CBD, that's what it means, right?" "Stocks? Is this similar to food stamps?" "..." When Su Ling put forward these concepts, people were confused at first. But when these concepts changed their lives, Su Ling suddenly discovered that he had been regarded as a god. However, they didn't know that Su Ling was very distressed: "System, this world is no longer a problem. Can I retire?" System: "If there is a problem, go to the forum. If there is no problem, even if you create a problem, go to the forum!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.