The stage of my college life could be the most important in my mind. You know, during that period I had opportunities to know more about the outside world. A brand new life, lots of new friends, teachers and professors or such. My general knowledge of the world wouldn't be limited any more. That is the core. For me, I think I have had some best friends and roommates, till now, they are my best partners of my life. So, that is it.