Which acupuncture point is best for opening orifices when there is invisible phlegm affecting the heart?

The choice of H9, also known as Shenmen, is particularly suitable for opening orifices in cases of invisible phlegm affecting the heart. In Traditional Chinese Medicine (TCM), invisible phlegm can hinder the mind and spirit, manifesting as symptoms such as anxiety, restlessness, or palpitations. H9 is a heart point that not only promotes the circulation of heart Qi but also reinforces the connection between the heart and the mind, making it effective in clearing phlegm that obscures mental clarity and emotional stability.

This point, being part of the Heart meridian, directly influences the heart’s function in terms of both physical health and emotional well-being. By using H9 to treat the condition, the practitioner aims to enhance the heart’s ability to communicate and express, aiding in the resolution of symptoms related to invisible phlegm.

In contrast, the other options do not specifically address the heart's need in clearing invisible phlegm. Each of them plays a role in various conditions, but they do not directly target the heart's ability to open the orifices as effectively as H9. Therefore, H9 is recognized as the optimal point in this context.