The foundation of traditional Chinese medicine lies in essence , Qi and Spirit. It's also the principle of treatment and wellness preservation. It reflects on the guiding principle of health , that is "when the Qi flows smoothly, the pain is diminished. When the Qi is stagnant, then the pain follows." The treatment of acupuncture also abides by this principle in accordance of meridians and acupoints administration. The eight confluent points are the assembling points of essence of Zhang, Fu, Qi, Xue, tendon, meridians, bone and marrows. The application of eight confleunt points can reach its optimal efficacy if follow this guiding principle.