2, and the medlar is sweet and flat, belongs to the liver and kidney, nourishes yin and blood, and benefits the eyes. Astragalus membranaceus is sweet and slightly warm, belonging to spleen and lung meridians; Functions: invigorating qi and yang, strengthening exterior surface and stopping sweating, promoting granulation and diuresis, and reducing swelling.
3. All three herbs have the function of invigorating qi and blood, so soaking in water for a long time can achieve the purpose of invigorating qi and blood, invigorating spleen and benefiting lung, enhancing immunity and strengthening body.