The Relationship Between the Tathāgatagarbha's Four Mahābhūta Seeds and Human Essence, Qi, and Spirit

The essence and qi within the human body belong to material form (rūpa). Spirit is the influence exerted by material form on the consciousness-mind. Essence is solid; it is formed by the Tathāgatagarbha using the seeds of the four fundamental elements, primarily composed of the earth element as minute material particles. Qi, also formed by the Tathāgatagarbha using the seeds of the four fundamental elements, is primarily composed of the wind element and is always in a state of floating and flowing. These two substances, essence and qi, circulate within the body, determining the body's condition and health, and influencing the emotions of the consciousness-mind. When essence is relatively abundant, the body is more vigorous, promoting smoother and less obstructed circulation of qi. Consequently, blood flows smoothly within the body, nourishing all organs, resulting in robust health and comfort. At this time, a person possesses spirit; their mental state is excellent, full of vitality and energy, and the body appears healthy and strong.

Conversely, when essence is insufficient, driving force is lacking, qi circulation becomes obstructed, blood flow is impeded, and the nourishment supply to the body's organs cannot keep up. The body feels heavy and uncomfortable, and the person appears listless, lacking spirit, with a poor mental state, devoid of vitality and physical stamina. The state of essence, qi, and spirit together reflects whether the four fundamental element seeds within the Tathāgatagarbha are harmonized.