Zone 88 on the thighs is located in the lower part of the body (Yin) and the area closest to the trunk of the body (Yin), thus acquiring a Yin character within Yin. We will use the points of this area to treat chronic conditions of deficiency. This is the strongest reinforcing area in Master Tung’s acupuncture.
Blood cells are created in adult bone marrow, primarily found in the thigh bones, calves, and arms. This can also explain the strengthening ability of Zones 88 (thigh), 77 (calf), and 44 (arm).

This diagram illustrates the relationships between the Dao Ma groups in the 88 zone of the thigh as defined by Master Dong. This detailed mapping is essential for practitioners to accurately locate and utilize these points.