Which pulse quality indicates a superficial condition in traditional Chinese medicine?

In traditional Chinese medicine (TCM), the quality of the pulse is assessed to provide insights into a person's health and underlying conditions. The term "Piao" refers specifically to a superficial or floating pulse. A pulse that is described as Piao is generally felt at the superficial level when palpated lightly, indicating that the Qi (energy) or blood is not deeply rooted. This pulse quality can be associated with conditions such as an exterior pathogen affecting the body, suggesting that the issue may be related to the skin or a superficial level of the body rather than deeper organs or systems.

The other options refer to different concepts and pulse qualities within TCM. For instance, "Li" is not commonly used to describe pulse qualities in this context. "Yin" and "Yang" represent foundational principles in TCM that describe dualistic forces within the body and its functions—but they do not specifically refer to a particular pulse quality that indicates a superficial condition. Thus, Piao is the accurate choice because it directly signals a superficial or floating condition according to traditional practices.