1 and "Dan" have rich meanings in Chinese characters, including "red", "cinnabar" and "Tian Dan".

2. Some people will choose nicknames with the word "Dan" to express their enthusiasm, vitality and vitality, because the word "Dan" is closely related to images such as red, fiery red and vitality. For example, nicknames such as "Dan fire burns the soul" and "Dan heart fire" can convey this enthusiasm and vitality.