Differences between "Achyranthes bidentata and Cyathula, Notopterygium Notopterygium and Radix Angelicae Pubescentis, Nansha participating in Radix Glehniae, Atractylodis Rhizoma and Atractylodis Rhizoma" Achyranthes bidentata is the dry root of Achyranthes bidentata of Amaranthaceae, which is mainly produced in Henan Province. It is named after it was produced in Guhuaiqingfu (now Jiaozuo City) and is one of the "four famous Huai medicines" at home and abroad. In the past, Achyranthes bidentata commodities were divided into head fat, second fat and flat strips according to their size. At present, they are only divided into one, two and three grades, with dry body, thin skin, fat meat, long strips, gray and buttery color and sweet taste. Achyranthes bidentata tends to nourish liver and kidney and strengthen waist and knees, and is mostly used for weakness of bones and muscles and pain of waist and knees caused by liver and kidney deficiency. Achyranthes bidentata is the root of Achyranthes bidentata of Amaranthaceae. Mainly distributed in Sichuan, Yunnan, Guizhou and other places. In the past, the commodities of Radix Cyathulae used to have the specifications of head crutch and second crutch, but at present, they are divided into one, two, three and uniform ones according to the size, and the ones that are dry, large, soft, oily and yellow-brown are preferred. Cultivation is superior to wild quality. Achyranthes bidentata tends to break blood and dredge channels, dispel wind and dampness, and is used for amenorrhea and rheumatalgia due to blood stasis. This product is good at descending, and it is specially used for treating the fire of upper inflammation and upper hemorrhage. It is also commonly used for the symptoms such as red eyes, swollen throat, hematemesis, epistaxis, etc.

Notopterygium Rhizoma and Radix Angelicae Pubescentis: Notopterygium Rhizoma and Radix Angelicae Pubescentis can dispel wind, damp, relieve pain, sweat and relieve exterior syndrome, and are used to treat wind-cold-dampness arthralgia syndrome and exogenous wind-cold-dampness exterior syndrome. However, Notopterygium incisum has a strong smell, and its master bladder meridian has a strong ability to disperse and relieve exterior symptoms. It can go straight to the top, traverse limbs and arms, and govern the upper common cold, so it is mostly used for rheumatism and arthralgia. Radix Angelicae Pubescentis has a light smell and mild nature. It mainly enters the kidney meridian, but moves downward into the interior. It is good at dispelling rheumatism between the waist and knees, treating rheumatism in the interior well, and has strong expelling wind and dampness. It is a commonly used and important medicine for treating rheumatism, but it is not as effective as Notopterygium. Generally speaking, Notopterygium is used for rheumatalgia above half body, and Radix Angelicae Pubescentis is used for rheumatalgia below half body.

Nansha's participation in Glehnia littoralis: The performance and function of Nansha's participation in Glehnia littoralis are basically similar. However, in terms of nourishing yin, clearing away heat and promoting fluid production, Radix Glehniae is inferior to Radix Glehniae. As far as expectorant effect is concerned; Then Radix Glehniae is superior to Radix Glehniae, and has the function of benefiting qi.

Both Atractylodes macrocephala and Atractylodes lancea are bitter in taste and warm in nature, and belong to spleen and stomach meridians, both of which can dry dampness and strengthen spleen, and the syndromes of diarrhea, edema, leukorrhagia and phlegm retention due to spleen deficiency and dampness are often combined. The difference lies in: Atractylodes macrocephala-sweet in taste, good at invigorating spleen, not as dry as Atractylodes lancea, so invigorating spleen is insufficient, and Atractylodes macrocephala is often used to treat deficiency syndrome of spleen weakness. Besides, Atractylodes macrocephala can strengthen the exterior, stop sweating and prevent miscarriage, and it is often used to treat spleen deficiency and weak qi, spontaneous sweating due to unstable muscle surface, spleen deficiency and weak qi, and fetal movement uneasiness. Atractylodes lancea-it tastes pungent, is good at transporting spleen, and is too dry for Atractylodes macrocephala, so it is more than enough to transport spleen and diarrhea. Atractylodes lancea is often used to treat dampness. Besides, Atractylodes lancea can dispel wind and dampness, sweat and improve eyesight, and it is often used to treat arthralgia due to wind-cold and dampness, swelling and pain of feet and knees, flaccidity and weakness, exogenous wind-cold and dampness, night blindness, blurred eyes and other symptoms.