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Zhenqi (True Qi), also known as Yuanshen (Original Spirit/Essence), is the refined essence generated prior to birth; it cannot be nourished without the support of Weiqi (Stomach Qi). Weiqi (Stomach Qi) constitutes Guchi (Grain Qi), Yingqi (Nutritive Qi), Yunqi (Transporting Qi), Shengqi (Generating Qi), Qingqi (Clear Qi), Wei Qi (Defensive Qi), and Yangqi (Yang Qi). Furthermore, Tianqi (Heavenly Qi), Renqi (Human Qi), and Diqi (Earthly Qi) constitute Sanjiao Qi (Sanjiao Energy). When analyzed separately, they differ; yet essentially, they are one. They should not be viewed as distinct names or conflicting theories.

Injury caused by improper diet and overexertion leads to spontaneous sweating and frequent urination. Yin Huo (Yin Fire) attacks the Earth position (Spleen/Stomach), preventing the generation of Clear Qi and obstructing the pathway of Yang, resulting in latent fire within Yin blood. Moreover, the Yangming Stomach Earth is dry on the right and hot on the left; thus, it tends to transform into dryness-fire, failing to retain body fluids. Additionally, both sweating and excessive urination deplete body fluids. Body fluids reaching the Middle Palace (Spleen/Stomach) transform into Blood. Mai (Vessels) are the residence of Blood; if Blood is lost, the Seven Spirits (Shen, Hun, Po, Yi, Zhi, Jing, and Shen's manifestations) have no foundation, and all vessels originate from changes within this center. Among various diseases, none is greater than Fengzhong (Wind Stroke). With sweating, wind pathogens invade; without sweating, Yang Qi remains secure and dense, pores close and resist, preventing various pathogens from harming the body.

One might ask: The Classics state that when Yang cannot overcome Yin, the Qi of the Five Zang organs conflicts, leading to obstruction of the Nine Orifices; it is also said that Spleen deficiency causes obstruction of the Nine Orifices, named "Zhongqiang" (Heavy Stiffness); further, disharmony among the Five Zang organs results in obstruction of the Nine Orifices; and headache, tinnitus, and dysfunction of the Nine Orifices are generated by the intestines and stomach. Please analyze and explain these points? The answer is: Pi (Spleen) is Yin Earth, possessing Supreme Yin Qi, governing stillness and non-action; Wei (Stomach) is Yang Earth, governing movement and ceaseless activity. Yang Qi existing underground enables the generation and transformation of all things. Thus, the Five Movements are above, and the Six Qi are below. The Spleen is approximately one chi long, covering the Tai Cang (Great Granary), which refers to the upper opening of the Stomach. The Spleen receives endowment from the Stomach, enabling it to steam and ripen the five grains. The Stomach is the source of the Twelve Meridians and the Sea of Water and Grain; when balanced, all transformations are peaceful; when diseased, all transformations are endangered. The Qi of the Five Zang organs connects upward to the Nine Orifices. The Five Zang organs receive Qi from the Six Fu organs, and the Six Fu organs receive Qi from the Stomach. The Six Fu organs correspond in Heaven to Wind, Cold, Summer Heat, Dampness, Dryness, and Fire; these are formless Qi. When Stomach Qi is harmonious, Ying Qi (Nutritive Qi) ascends, generating warmth and heat. Warmth and heat correspond to Spring and Summer, circulating through the Yang aspects twenty-five times. When the six Yangs reach their peak of ascending and dispersing, Yin is generated below; Yin descends and moves downward corresponding to Autumn and Winter, traveling through the Yin pathways, manifesting as cold and coolness. Once the Stomach is diseased and unable to nourish, the Qi of the Six Fu organs becomes exhausted, causing the Yang pathway to fail and Yin Fire to ascend. The Qi of each Zang organ undergoes transformation from one Fu organ, thereby nourishing skin, vessels, sinews, and bones. Therefore, it is said that the Qi of the Five Zang organs is exhausted externally because the generating Qi of the Six Fu organs fails first; the Five Zang organs, having nothing to receive, subsequently lose their Qi. Fei (Lung) naturally directs Qi downward and governs the five Qi; when Qi is exhausted, it flows downward, overlapping with Pi Earth in the Lower Jiao, hence termed "Zhongqiang." When Stomach Qi is diseased, it sinks downward. The Classics state: Dampness is received from below. Pi is Supreme Yin, rooted in Earth, being tangible Earth that fills the sources of the Nine Orifices below, preventing them from connecting upward to Heaven; thus, disharmony among the Five Zang organs leads to obstruction of the Nine Orifices. Wei (Stomach) transports Clear Qi upward, representing the Yang Qi of Earth; accumulated Yang forms Heaven, described as "Clear Yang emerges from the upper orifices," "Clear Yang fills the four limbs," and "Clear Yang disperses through the interstices." Since the Spleen and Stomach are invaded by Yin Fire, Grain Qi becomes blocked and flows downward; consequently, Clear Qi does not ascend, causing dysfunction of the Nine Orifices. A disease in the single Fu organ of the Stomach results in insufficiency of Yuan Qi (Primal Qi) in all twelve meridians. Insufficient Qi leads to stagnation of Jin Ye (Body Fluids); stagnant Jin Ye leads to Blood deficiency; thus, sinews, bones, skin, flesh, and vessels become weak, indicating that both Qi and Blood are emaciated. Must one not be cautious regarding physical exertion and dietary intake? Those suffering from such conditions, even if other diseases do not develop, have already damaged their natural lifespan. If compounded by errors in acupuncture and medication, how can death before one's time be avoided?