Huang Ti, an ancient Chinese emperor, made significant contributions to the understanding of the human body, particularly regarding the circulatory system. Remarkably, he deduced that the heart regulates blood within the body and that blood circulates continually without interruption. His insights about the body's functions were made four thousand years before the more widely recognized discoveries of William Harvey, who later confirmed similar principles through direct anatomical studies.

This achievement is noteworthy because Huang Ti arrived at these conclusions without ever needing to conduct dissections or examine corpses, unlike Harvey, who relied on invasive methods. His ability to discern such complex physiological truths illustrates the depth of ancient knowledge in medicine and how these early thinkers laid the groundwork for future advancements in biological sciences.