Group 1 - The core idea of the article revolves around the significance of the "Lidong" (立冬) solar term, marking the beginning of winter and the transition of nature into a state of rest and conservation [1][2][4] - "Lidong" is the 19th solar term in the 24 solar terms, characterized by significant temperature drops and the onset of winter conditions, particularly in the Yellow River basin [2][4] - Traditional customs associated with "Lidong" include preparing for winter by storing food, such as pickling vegetables and consuming hearty meals like lamb soup, which is believed to promote blood circulation and provide warmth [10][8] Group 2 - The article highlights the importance of dietary practices during "Lidong," emphasizing the consumption of warming foods like lamb and dumplings to enhance energy and resistance to cold [10][9] - It mentions that in ancient times, "Lidong" was a crucial time for rituals and festivities, including ancestor worship and communal feasting, reflecting the cultural significance of this period [6][4] - The article also notes that "Lidong" serves as a reminder for people to prepare for the winter season, aligning with natural cycles and ensuring well-being during colder months [6][4]

Group 1 - The article marks the arrival of "Lidong," the 19th solar term in the lunar calendar, indicating the beginning of winter [1] - Lidong is recognized as the first solar term of winter [1] Group 2 - The article suggests that there are specific health practices associated with Lidong [1]

Core Points - The article emphasizes the importance of health preservation during the winter season, particularly during the "Lidong" solar term, which marks the beginning of winter and signifies the need for nurturing the body's internal energy and protecting against cold [6]. Group 1: Dietary Recommendations - A recommended dish is "Red Date, Longan, and Goji Berry Porridge," which includes 10 red dates, 10 longans, 10 grams of goji berries, and 100 grams of glutinous rice, providing warmth and nourishment to the body [3]. - Another suggested dish is "Angelica and Ginger Lamb Soup," made with 9 grams of angelica, 15 grams of ginger, and one pound of lamb, known for its warming and pain-relieving properties [4]. - "Ginger, Jujube, and Rose Tea" is also recommended, consisting of 3 slices of ginger, 5 jujubes, and 10 rose flowers, which helps to dispel cold and warm the stomach [5]. Group 2: Health Preservation Principles - The article outlines that during Lidong, the body's yang energy should be conserved, and it is essential to protect the lower back, navel, and soles of the feet to maintain vitality [6]. - It advises against consuming raw, cold, and greasy foods, suggesting a focus on warming and nourishing the spleen and kidneys while avoiding excessive warming that could harm the yin [7].