This article was created to encourage lazy Huo to work hard. Every time when the exam is approaching, Huo wants to go back to the past and beat his lazy self to death. This article is created from this imagination. I work hard while writing. The me in the past and now are working hard for a better tomorrow. (The copywriting is useless, I don't expect anyone to read it, it's just for my own entertainment) (?▽?)