As the basis of longevity, health means the absence of harmful matter and factors inside the body. Nowadays, people can be divided into three categories: the healthy, accounting for 5% of all people, the sick, 15%, and the predominately sub-healthy, at approximately 80%. The sub-healthy are in a dangerous state characterized by the constant presence of hidden damage, which has yet to cause significant inconveniences. Such people need to CLEANSE the spleen, stomach, and intestines, REPLENISH qi, the blood, Yin and Yang, and STRENGTHEN nutrition that is deficient so as to reach the health care goal of BALANCING.

The human body is an organic whole, where an imbalance between Yin and Yang will lead to the malfunctioning of the internal organs. When 1 organ gets damaged, all the others are affected, which results in an imbalance in the human body. Therefore, unfavorable factors should be removed from the body beforehand by restoring balance and strengthening nutrition. As stated above, “the body is able to resist the harmful qi when the vital qi is inside.” When the harmful qi enters the body, the vital qi actively combats it; the subsequent struggle disturbs the balance between Yin and Yang in the body or causes the internal organs to malfunction, which results in the operational disorder of qi and blood reflected by a series of pathological changes. If the vital qi prevails and the harmful qi recedes, the disease tends to improve and be cured. If the vital qi is weak and the harmful qi dominates, the disease tends to worsen and even leads to illness and death.