It seems to be a full stop, which puts an end to every thing.With it, those days in Toronto turn out to be a perfect circle,like the final note of a piece of music.Boun, the end!

• 有时候；会觉得生活是由一个又一个的圆组成的.；每一件事情都会顺著一个轨迹发展；最后首尾相接；结尾与开始吻合