This Chapter from the Yellow Emperor's Classic of Internal Medicine, details precise bone and joint measurements of an average person (7 feet 5 inches tall) as a foundation for understanding meridian lengths in traditional Chinese medicine. The measurements, provided by Bo Gao in response to the Yellow Emperor's inquiries, cover the head, torso, limbs, and spine, with variations noted to indicate organ size discrepancies. These anatomical proportions serve as a basis for interpreting pulse characteristics, connecting physical dimensions to internal energy (qi) and blood levels. The text highlights the interdependence of physical structure and internal physiological states.