I'm going to the second grade soon, and I'm a little excited. Open the math book and turn it page by page. These are all things I will learn. For my second year, it was a distant place, and now I'm going to that beautiful "land". Looking at the pages of the math book, I have understood that I am no longer that naive first-year student. What we are facing is not simple addition and subtraction, but sublimation to multiplication and division. Since then, I made up my mind to study hard and change myself. Let yourself walk up a flight of stairs.