Not long ago, I was feeling the cool breeze of early autumn in another place in another city, but now I am sitting in this place in this city enjoying the scorching sun. Time seems to fly for a long time, and it also seems to go back a lot. So much so that I am not sure whether the current time and place are real. Everything in the university is like the haze of the desert, giving people the illusion of a mirror in the mirror. So I can only say that this is the late summer and early autumn of a certain year and month, and maybe in the near future today will be forgotten like the original time.