This is an essay I wrote after seeing a postscript of a book signing on Weibo. Be happy for the person who beat depression because of music. There may be these people around us. Family members and friends around us cannot understand them. They can only hide silently and alone in the shadow of their own hearts. I wish we could see more of these people and help them. At the same time, I also want to say that music is magical, it can bring us comfort and strength. Thank you all.