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When malaria persists for years without resolution, it is referred to as *Lao Nue* (Old Malaria). Whether due to food stagnation (*Shi Ji*), phlegm-fluid retention (*Tan Xian*), or blood stasis (*Yu Xue*), these pathogenic factors can coalesce into a palpable mass (*Pi Kuai*) hidden in the abdomen and hypochondrium, causing distension and pain, accompanied by excessive sweating. This condition is termed *Nue Mu* (Malaria Mother). There are also cases where improper regulation and treatment lead to deficiency of both Ying Qi (Nutritive Qi) and Wei Qi (Defensive Qi), or where antimalarial measures are taken too early, allowing pathogens to lie latent in the hypochondrium of the Liver Meridian, thereby forming a mass. Lei Feng has observed that such masses are more frequently located in the left hypochondrium. Since the left hypochondrium belongs to the Liver, treatment should involve tonifying deficiency while simultaneously soothing the Liver. The appropriate formula is *Tiao Zhong Chang Qi Fa* (Regulate Middle and Unblock Qi Method), removing Bai Shao (White Peony Root), Bai Zhu (Atractylodes Rhizome), Gan Cao (Licorice Root), and He Ye (Lotus Leaf), and adding Qing Pi (Green Tangerine Peel), Bie Jia (Turtle Shell), Mu Li (Oyster Shell), and Ban Xia (Pinellia Tuber). If the patient's constitution and Qi strength have not yet declined, but the mass causes severe pain, Peng Zhi (Rhizoma Curcumae Phaeocaulis), San Leng (Rhizoma Sparganii), and Rou Gui (Cinnamon Bark) may be added. However, if one exclusively uses harsh attacking and reducing drugs to treat the mass without considering the Righteous Qi (Zheng Qi), it may progress to *Zhong Man* (Abdominal Fullness), at which point it becomes incurable. Can one not be cautious?

*San Ri Nue* (Three-Day Malaria), also known as *San Yin Nue* (Three-Yin Malaria), refers to malaria that occurs every other day. Zhu Danxi stated: Malaria occurring on Zi, Wu, Mao, You days is Shaoyin Malaria; on Yin, Shen, Si, Hai days is Jueyin Malaria; on Chen, Xu, Chou, Wei days is Taiyin Malaria. While this theory seems plausible, Dai Yuanli (Jiebin) and Lu Yu refuted it, adhering strictly to the teachings of Huangdi Neijing (Xuanqi). The Classic states: "Sometimes there is an interval of two days, or even several days before onset, because the pathogen and Wei Qi reside in the Six Fu Organs, and sometimes they fail to meet or interact, thus remaining dormant for several days before manifesting." Li Nian'e explained: "Reside" implies meeting. When the pathogen is in the Six Fu Organs, the Qi interaction is distant and infrequent, hence the two-day interval or multi-day dormancy. From this perspective, Zhu Danxi's theory is not authoritative. Generally, malaria with a two-day interval indicates the pathogen has deeply lodged in the Fu Organs, failing to interact with Wei Qi. It should be treated with *Shuang Jia Sou Xie Fa* (Double Shell Search-and-Expel Pathogen Method). For patients with Yin deficiency constitution, add Shou Wu (Polygonum Multiflorum Radix Preparata) and Dang Gui (Angelica Sinensis Radix); for those with Yang deficiency, add Lu Jiao Shuang (Deer Antler Glue) and Lu Dang Shen (Codonopsis Pilosula). In cases with intervals of several days, the pathogen is even deeper, which goes without saying. Whenever pathogens sink deeply, it is invariably due to deficiency of Righteous Qi. One should employ *Bu Qi Sheng Yang Fa* (Tonify Qi and Raise Yang Method) to support the deficient Righteous Qi and lift the sunk pathogen. Once Righteous Qi recovers its vigor, the pathogen will exit naturally, and the malaria will recede without direct expulsion.

One might ask: Why does your discussion on malaria cover the Three Yin meridians but omit the Three Yang meridians? I reply: Zhu Danxi's differentiation of the Three Yins has already been refuted by earlier scholars. Since you ask about the Three Yangs, I shall briefly address them. Generally, malaria affecting the Taiyang meridian presents with severe chills, requiring diaphoresis (sweating method); affecting the Yangming meridian presents with severe heat, requiring clearing heat; affecting the Shaoyang meridian presents with alternating chills and fever, requiring harmonization.

Another question arises: You have detailed various types of malaria, why did you omit *Tai Nue* (Fetal Malaria)? What exactly is it? I answer: *Tai Nue* is a common folk term today. Some refer to malaria in infants as *Tai Nue*; others define it as malaria contracted by someone who has never had malaria before. Some even correlate the mother's age with the malaria cycle, but these views are not entirely accurate. In summary, whether in infancy or adulthood, anyone who has never suffered from malaria is called *Tai Nue*. Treatment must still differentiate between Summerheat, Wind, Cold, and Dampness types. I have observed that *Tai Nue* is more persistent and difficult to cure quickly than ordinary malaria. One must wait until the pathogenic force weakens before attempting to arrest the malaria.