The heaven has the four seasons and the five elements that cause the cycle of generation, growth, reaping and storage; cold, also summer heat, dryness, dampness and wind climates are produced. Five zang organs (heart, liver, spleen, lung, and kidney) generate five qi, so that joy, anger, sorrow, worry and fear are produced. Excessive joy and anger injure the qi; cold and summer heat injure the body form. Tempestuous anger impairs the yin; and frantic joy impairs the yang. The reverse qi moves upward, then the full pulse loses its normal shape at that point. When joy and anger are intemperate, cold and summer heat are excessive, one’s life will not be secure. So, the extreme yin must lead to yang, and extreme yang must lead to yin. Hence the saying: impaired by cold in winter, one must get a warm disease in spring; impaired by wind in spring, one must get Diarrhea containing undigested foods in summer; impaired by summer heat in summer, one must be afflicted with malaria in autumn; impaired by dampness in autumn, one must be afflicted with cough in winter.
Key words: topic on correspondences and manifestations, Yin and Yang, the plain questions
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