I didn't think about writing this at first, but later I found that I wrote several times more stuff when I was bored than when I calm down and wrote, so I thought I should summarize it. Even if it is messy, it is better than a mess. So there is this - just settle down. Its appearance was very dramatic, just a hint that flashed in my head, but I was sure it was it. The meaning is clear and concise, neither obscure nor dark. It just refers directly to the current living conditions of some people. Of course, I am one of these people. My name is Sanyin. It sounds awkward and convoluted. It has no deep meaning. It is just a code name, a code name for a kind of life. I think Sanyin is a typical example of this kind of life.