Which point is identified as the jing well point on the wood element of the heart meridian?

The jing well point for the wood element on the heart meridian is indeed identified as HE 9. Jing well points are traditionally located at the tips of the fingers or toes and are associated with the activation and energization of the corresponding meridian. In the case of the Heart meridian, which is connected to the Fire element, the heart's wood element is particularly significant, as it influences emotional balance and mental clarity.

HE 9 is located at the radial side of the tip of the little finger. This position is vital not only for its energetic properties but also for its ability to influence the heart's relationship to the liver, considering wood's association with the liver in traditional Chinese medicine. The relationship and balance between these organs is crucial for overall emotional and physiological health, making this point essential in acupuncture practices focusing on heart-related issues.

In contrast, the other points listed, like HE 7, HE 8, and SP 1, serve different functions along the Heart meridian or belong to different meridians entirely, hence they do not qualify as the jing well point of the Heart meridian. Understanding the specific functions and locations of each point enhances the acupuncturist's ability to effectively treat various conditions.