When do boys use gray heads?

A: In many cases, gray mainly expresses the feeling of being in a bad mood and melancholy. Boys use their faces to show that they are in a bad mood recently, hoping to be comforted. At the same time, the gray head portrait will also give people a feeling of high cold, so that boys can express their recent melancholy. Of course, the meaning that the gray head portrait wants to express is not fixed. Sometimes it may be because such boys like gray, so they use gray heads. The specific usage needs to be analyzed in combination with the specific situation.