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Treats Wind-Strike of the Jueyin (Jueyin Wind-Strike, a disease pattern caused by wind pathogen affecting the Jueyin meridian), characterized by aversion to wind and fatigue, spontaneous sweating, acute pain in the lower abdomen, alternating chills and fever resembling malaria, vexing pain in the bone joints, with both the Cun (inch) and Chi (cubit) pulses being faint and slow.

Guixin (Cinnamon Heartwood), Danggui (Angelica Sinensis Root), Chuanxiong (Ligusticum Chuanxiong Rhizome), Qianhu (Peucedani Radix), Fangfeng (Saposhnikoviae Radix) (each 3 fen), Shaoyao (Paeoniae Radix) (1 liang 5 qian), Zhigancao (Prepared Licorice Root), Fuling (Poria) (each 0.5 liang).

Crush the herbs. For each dose, take 4 qian, add 1.5 zhan of water, 5 slices of fresh ginger, and 3 jujubes. Decoct until 0.8 zhan remains, strain off the dregs, and administer before meals.

The Classics state: "If one is injured by Cold in winter, Warm Disease (Wenbing, febrile diseases occurring in spring due to latent cold) will manifest in spring." This is because if the disease does not occur immediately in winter, the Cold toxin hides above the Fengfu (GV16) acupoint. When the warming Qi arrives in spring, it triggers the disease, hence it is called Warm Disease. Some recover, some die; those who die often do so within six or seven days, while those who recover usually take more than ten days. The world calls this a major disease. One must follow the transmission changes of these meridians and distinguish them by pulse and symptoms to apply treatment. The methods for treating Shanghan (Cold Damage) are essentially contained herein. By the Jin Dynasty, Zhang Zhongjing's discussions were compiled; regarding the Taiyang (Taiyang Meridian, the exterior defensive level) meridian, two formulas—Mahuang Tang (Ephedra Decoction) and Guizhi Tang (Cinnamon Twig Decoction)—were presented to treat Shanghan and Shangfeng (Wind Strike), along with detailed preparatory methods for correcting errors via modifications. However, treatments for Wind Strike involving the Yangming (Yangming Meridian), Shaoyang (Shaoyang Meridian), and the three Yin meridians were scarcely heard of. Thus, it is known that Zhang Zhongjing only measured these two diseases based on the Taiyang meridian to prevent confusion. Since the compilers did not clarify and distinguish these, later learners remained ignorant, obscuring the classics for over a thousand years with little reflection, which is truly lamentable. Now, I extract the various formulas used to counteract Cold Damage across the Six Meridians as the guiding principles. As for the treatment of complicated cases (Huazheng, damaged or complicated disease patterns), except where they appear in their respective sections, they are compiled below to clearly distinguish right from wrong. I dare not rely on personal speculation but have grounds in the sacred scriptures.

The *Neijing* (Inner Canon) discusses Shanghan, mentioning only the foot Three Yin and Three Yang meridians, the transmission of the Six Meridians, the number of days for recovery or non-recovery, and the flow and injection sites according to their respective Zang-Fu organs and meridians, applying sweating or purging methods accordingly, and describing the pulse responses and clinical manifestations of Lianggan (Simultaneous Invasion, a severe form of cold damage affecting both exterior and interior simultaneously). It was Zhang Changsha (Zhang Zhongjing, who served as Prefect of Changsha) who used Yi Yin's *Tangye Jingfa* (Classic of Decoctions) as the basis for treatment methods, additionally discussing Wind Strike, Summerheat, and Dampness, with varying degrees of detail, allowing later learners to infer other cases from one example. In the Jin Dynasty, people failed to understand its meaning, merely compiling and circulating it, leading to countless subsequent imitators. Works such as *Baiwen*, *Zhengzhi*, *Tigang*, *Mulu*, *Cuoyao*, *Beiquan*, *Haren Shu* (Book of Vitality), *Shanghan Lun* (Treatise on Cold Damage), and even *Tuxing* and *Zhimai* all plagiarized the Jin compilations without achieving true understanding (*ju yi fan san*). Although intended for widespread dissemination, they failed to clarify the categories of meaning. Because the Jin compilation failed to distinguish between primary and secondary treatments, mixing preparatory formulas with primary treatment formulas, while omitting much of the primary formulas, further obscured the texts. Later learners became rigidly confined; without removing the superfluous, they could not grasp the essentials. Therefore, I discuss this separately hereafter.