The liver was thought to be the dominant organ in spring, the heart in summer, the spleen in mid-summer, the lungs in fall, and the kidneys in winter.
在春天肝臟的活動力最強；夏天，就由心臟成為「盟主」；到了仲夏，轉為脾胃的天下；秋天肺臟的旺盛取代了脾胃；到了冬天，則以腎臟的機能最旺。