As a student in the ivory tower, I come into contact with nothing but books every day. Every day we chat with Newton, do homework with Chen Jingrun, listen to songs with Beethoven, play games with Einstein, and watch the stars with Copernicus... However, occasionally, from the top of the ivory tower, we can see the sky of adults, their mountains and flowing water, and see the strange world that belongs to them and will belong to us in the future. In them, you can see your future self. Although it is strange now, I will gradually get used to it in the future.