It makes me think...
Listening to this I had two images: the beginning made me think about how I felt when riding on the MTR in the morning to get to school. There were also moments of me walking by myself around in shopping malls, and by the ocean. It was calming to listen to.
I thought the piano melody was nice, but for some reason the normal piano doesn't sound like it fits absolutely perfectly in the song (maybe it's just me), although whatever sound effects you did with it after the first section definitely fit in and it sounded really cool...and they also put in that "asian cameo" sound you seem to have in some of your songs, heh. I can't help but feel that the background could use a little more accompaniment, it sounds great but also a bit empty at the same time.
Your comments mention that this piece sounds to you like you would feel walking through campus along your day. While I did initially get similar visual thoughts, I think it's more because this song seems to represent my state of mind in those moments -- namely, a state of retrospection and deep thought, as I observe, speculate, but do not actively interact with my surroundings. Perhaps that's also how you feel when you're walking through school?