Xia Yunguang is an author about whom limited public information is available. Only two works are currently known, namely Tongnian (The Same Year) and Qianshi Qianshi (Past Lives, Past Matters). Judging from these two works, the writing mainly falls between modern romance and time-travel alternate-world fiction, combining emotional narratives close to contemporary life with imaginative stories built around shifts in time and space. Owing to the limited materials, the author's nationality, dates of birth and death, educational background and writing career cannot be confirmed, and no English name is on record. Understanding of this author therefore has to rely on the works themselves as clues: readers may note how emotional relationships and alternate-world settings are balanced and chosen between. Overall, Xia Yunguang is a Chinese-language author with a small number of works whose personal history has yet to be systematically documented, and whose creative profile awaits further materials and works.