Master, Didn't You Say We Are Just Little Security Guards?

"Wherever there are people, there are rivers and lakes." This is what my master has always told me, but as a righteous young man in the 21st century, I always feel that he is bragging. In modern society, there are still so many rivers and lakes, but the deeper I get into the industry, the more terrifying I feel about these rivers and lakes. It turns out that it is just the times that have changed, not the rivers and lakes...