When I was sixteen years old, I heard the sound of flowers blooming, which was a little sober, a little sweet, a little sad, and had many, many thoughts and many, many moods. I heard that as much as a person likes the sun on the surface, he is afraid of the dark when he is alone; no matter how quiet and elegant a person is on the surface, there will be times when he is crazy and unruly; no matter how cowardly a person is, there will be times when he is fearless.