What I understand is that Xu Fengnian, who is full of energy and youth, is a person who dare not speak loudly in fireworks. Xu Fengnian here refers to the mythical figures, the Zhenwu Emperor and the former Qin Emperor who came to the world. These two sentences come from someone in Weibo, two selves in the world. One is Xu Fengnian, an extremely natural and unrestrained fairy riding a white horse in Tsing Yi in her dream. One is me who dare not speak loudly in the fireworks. In sharp contrast, it also expresses the author's pursuit of unruly life and his desire to get rid of secular life.