What does Huai medicine mean among the four major Huai medicines?

Dear friends, Jiaozuo made it specially. Just now I introduced the historical story of Jiaozuo to you. As we all know, Jiaozuo was called "Huaiqing House" in ancient times, and Taiji culture took root and flourished in "Huaiqing House". Then, on this ancient Yellow River road with beautiful natural scenery and colorful human landscape, on the land at the southern foot of Taihang Mountain, mountains and rivers have created the historical and cultural origin of the ancient Huaiqing Palace for more than 3,000 years, occupying the best time and place, absorbing the essence of heaven and earth, and growing the aura of heaven and earth. The four precious Chinese herbal medicines "Dioscorea opposita, Rehmannia glutinosa, Achyranthes bidentata and Chrysanthemum" are called "China's Four Huai Medicines" because Jiaozuo was called Huaiqing in ancient times. It has a history of more than 3000 years and is a very precious Chinese herbal medicine in China. For thousands of years, it has been famous at home and abroad for its unique efficacy and nourishing function. In ancient medical books, Compendium of Materia Medica records that "today's people only take Huaiqing Dihuang as the top grade" and Shennong Herbal Classic records that "yam is beneficial to Huaiqing, Henan". Su Song, a physician in the Song Dynasty, said, "Chrysanthemums are everywhere, and". In modern times, during the late Qing Dynasty and the Republic of China, there were Huaishang and Huaiqing Guilds, which mainly engaged in four kinds of Huai medicines (1962). National Medical Products Administration selected 44 kinds of Chinese herbal medicines from 1892 kinds of Chinese herbal medicines recorded in Compendium of Materia Medica as "treasures of traditional Chinese medicine". Now it is also a national protected product of origin, and the four major Huai medicines refer to "Dioscorea opposita, Rehmannia glutinosa, Achyranthes bidentata and Chrysanthemum". Among them, Dioscorea opposita is the most famous, known as "Huaishen", and is well-known throughout the country with the nickname of "Huaishen" in China, and exported to all parts of the world. It is the first of the four Huai medicines, and it is a good product for both medicine and food of the Chinese nation. "Chinese yam" recorded in Compendium of Materia Medica is sweet, warm, flat and non-toxic. It has the effects of "invigorating qi and nourishing yin, strengthening spleen, stomach and kidney, consolidating essence and enriching blood, strengthening body constitution, beautifying and resisting aging", and has therapeutic effects on lumbago due to kidney deficiency, dysmenorrhea, chronic cough due to lung deficiency and diabetes. It is a treasure of invigorating qi and nourishing yin. Then, in the vegetable market in our hometown, we often see a kind of vegetable yam, which is particularly thick and long, and needs to be peeled when eating. The yam is cylindrical, with a length of 15-30cm and a diameter of 1.5-3cm. The surface is loess-colored, the pores of fibrous roots are uniform, the texture is solid, it is not easy to break, the section is white, and it is excavated in late autumn and early winter. Among them, "iron stick yam" is the best yam. Iron stick yam combines the medicinal value of yam with the natural quality of wild yam for hundreds of years, forming a unique appearance and texture, which can not be cooked or steamed for a long time. Because of its unique effect like an iron bar, it is named "iron bar yam". The nutritional value is extremely rich, and the skin and core are better when eaten at the same time. Medium-cooked, dry, sweet to eat, and extremely strict planting requirements. It takes six to eight years to plant iron yam after planting the land for one season. Iron stick yam contains 18 kinds of carbamic acid and 10 kinds of essential trace elements. Polysaccharides and saponins have the effects of invigorating spleen and kidney, replenishing essence and marrow, nourishing stomach and moistening lung, lowering blood sugar and blood lipid, promoting digestion and tonifying deficiency, enhancing human immune function, enhancing memory, resisting fatigue, resisting aging, beautifying and losing weight. Rehmannia glutinosa has the effects of nourishing yin and blood, replenishing essence and marrow, and it is also the top grade of four kinds of Huai drugs. In Shennong Materia Medica, Rehmannia glutinosa is the top grade, which is the best product for the monarch to nourish his destiny. Long-term use, through the body qi, prolong life. "Compendium of Materia Medica" records that "men with excessive yin deficiency and hair loss due to blood heat should use yellow". It is characterized by chrysanthemum heart, pure and heavy taste, sweet and delicious, and it is a tribute of the royal family in past dynasties. It is a dual-purpose health care product of traditional Chinese medicine and diet, which is divided into "raw land" and "prepared land". Rehmannia glutinosa can produce spermatorrhea, and Rehmannia glutinosa can replenish spermatorrhea. Radix Rehmanniae is sweet and bitter, and has the effects of nourishing yin, clearing away heat and cooling blood, promoting fluid production and moistening dryness. It is mainly used for treating internal heat due to yin deficiency, sore throat, alopecia, white hair, chloasma, facial rash and dry skin. Rehmannia glutinosa is sweet and warm, and has therapeutic effects on nourishing yin and blood, replenishing essence and marrow, body weakness, hyperhidrosis, irregular menstruation, dizziness and tinnitus. The eating method is also very simple, and it can be brewed with boiling water or stewed with wine. Achyranthes bidentata is the main medicine for promoting blood circulation and removing blood stasis, and it is also the main preparation of Mailuoning, a traditional Chinese medicine, which is used to treat cardiovascular and cerebrovascular diseases. The slender strip makeup is named after its knobby stem, which looks like Achyranthes bidentata. It is also a drug primer. Achyranthes bidentata can make the medicine more effective than kneecap. Regular use of Achyranthes bidentata has the effects of dredging joints, leading blood downward, treating liver and kidney deficiency, waist and knee pain, weakness of bones and muscles and removing stones. Eating is also very simple. "Take 3-5 small pieces, you can soak in wine when you are raw, and you can add stew, soup and hot pot when you are cooked! Chrysanthemum morifolium, also known as Taihang Chrysanthemum, is the best chrysanthemum for both medicine and food because of its yellow flowers and fragrant smell. "Shennong Herbal Classic" listed Huai Ju as the top grade, and paid tribute to the royal family in Tang and Song Dynasties. Drinking chrysanthemum water often can clear the throat and benefit the throat, improve eyesight and reduce fire, prolong life, and have black beard and black hair. Tour guides like us often drink chrysanthemum water while talking in hot summer, which can protect our voice and keep it fresh at all times.