Guo Ran is a modern romance author about whom relatively limited public information is available. Only one work by this author is currently included in the collection, the representative title Left and Right. As basic details such as nationality, dates of birth and death, and an English name remain unconfirmed, the existing material is not enough to sketch a full picture of the author's creative career or personal background, and only a brief note on the available work is possible. Judging from the classification of Left and Right as modern romance, Guo Ran's writing draws on contemporary urban life and centers on romantic relationships. The title itself suggests choice, hesitation, and dilemma, perhaps hinting that the story focuses on characters wavering between love and life decisions. Modern romance has long valued nuanced psychological portrayal and authentic everyday detail, and Guo Ran's work can be understood within this tradition. Given the limited number of works, a full assessment of the author's style, reader response, and influence is difficult, and further public information and publications are needed for confirmation.