Abstract: The first question of the 38th China Chemistry Olympiad (Preliminary) showcases a notable degree of innovation, utilizing the alchemical method of preparing “Red Dragon Blood” as a scenario to explore the properties and transformations of substances such as Sb₂S₃ and Au. This analysis provides a detailed examination of the question, traces its origins, and offers an expanded introduction to relevant materials. These insights aim to deepen readers’ understanding of the competition questions and serve as a valuable reference for students preparing for chemistry competitions.

Key words: Chemistry, Olympics, Test question analysis