The simple temperament of girls with two-word online names can refer to the following suggestions: 1. Temperament beauty: Contly and clearly express the temperament and beauty of a woman while avoiding using overly fancy or cumbersome words. 2. Fresh and refined: emphasize the freshness and elegance of women while avoiding the use of overly vulgar or repetitive words. 3. Elegant Princess: emphasize the gentleness and elegance of women while avoiding using overly abstract or vague words. 4. Cold Goddess: emphasize the indifference and nobility of women while avoiding using overly general or vague terms. 5. Sweet Beauty: It highlights the sweetness and gentleness of women while avoiding using overly monotonous or cumbersome words. The above suggestions are only for reference. The specific online name needs to be decided according to the plot and character of the novel.