From the time when we were barefooted children, we staggered along with the torrent and grew up to what we are now. In every memorable time, I wrote these little essays. Maybe you, like me, will think of the light and shadow of your bare feet to high heels when you read these words. In these essays, there are not only the shadows of you and me, but also your parents hugging you, the partners running beside you, the people you just passed by but it hurt your heart, and the people just on the side of the road, in the fields, on the light rail, and in the high-rise buildings that make you inexplicably happy...