What is a symptom of Lung Yin Xu?

A symptom of Lung Yin Xu is a weak voice. In Traditional Chinese Medicine, Lung Yin Xu is characterized by a deficiency in the body's fluid and nourishment that support lung health. This deficiency often leads to a number of respiratory and systemic symptoms, one of which includes a weak or soft voice. The lungs are responsible for producing and supporting the voice, and when they lack sufficient Yin (nourishing and moistening elements), the voice may become less robust.

The other options presented are characteristic of different conditions. For instance, thick-dry-yellow tongue coating is often associated with heat or damp-heat conditions rather than a Yin deficiency. Abdominal pain is typically more related to issues within the digestive system or could indicate a different organ's disharmony. Strong and long body hair does not have a direct relation to Lung Yin Xu and might suggest another imbalance or condition. Thus, the presence of a weak voice is a clear and indicative symptom of Lung Yin Xu.