Tianqi, also known as Panax ginseng, is a perennial herb that is used medicinally to activate blood circulation and remove blood stasis, and is a member of the ginseng family. It was originally native to the mountains and fields, but was discovered and adopted a long time ago, and later turned into artificial cultivation. Because this plant generally has three petioles per plant, and each petiole often has seven leaves, it is commonly known as "Sanqi". According to the Qing Dynasty "Quishun Prefecture Records", "Panax pseudoginseng ...... is best produced in Tianzhou", and the Qing Dynasty "Baise Hall Records", Volume 3, also said that Panax pseudoginseng is "commonly known as Tianqi" because it is actually from Tianzhou. Tianqi is a kind of valuable medicinal village, which is an excellent species in the genus Ginseng with unique functions. According to Li Shizhen's Compendium of Materia Medica of the Ming Dynasty, Tianqi has a slightly sweet and bitter taste, quite similar to that of ginseng, and is known as "Gold Butter". According to Zhao Xuemin's "Compendium of Materia Medica" of the Qing Dynasty, "ginseng is the first to replenish qi, and panax ginseng is the first to replenish blood, with the same flavor and the same function, so it is called ginseng and panax ginseng, and it is the most precious of Chinese medicines. The Compendium of Materia Medica also says, "Tianqi is the main treatment for stopping bleeding, dispersing blood, fixing pain, gold blade and arrow injuries, falling and beating staff sores with blood coming out more than one, chewing the material rotting coated, or for the end of the mixture, the blood stopping," "the southern people in the army for gold sores to be the key medicine," and said, "but also the main blood vomiting, epistaxis, blood, blood bites and insect injuries," diarrhea "," the large intestine under the blood, the blood avalanches of women, post-partum hemorrhage, blood after delivery, the men and women, the red eyes, the nameless carbuncle, the tiger bites insect injuries ", and so on. According to drug analysis, Tianqi mainly contains six kinds of saponins and glutenol, carotene, flavonoids. Saponin is the main component of ginseng, which is useful in enhancing physical strength, improving oxygen metabolism of the heart muscle, and improving the tolerance of animals to hypoxia. It is not a false statement that Tianqi has the same function as ginseng. Sterols and carotenoids can lower blood lipids, while flavonoids are effective components in expanding coronary arteries, improving myocardial blood supply and increasing vascular elasticity. Therefore, taking Tianqi regularly not only has significant curative effects on coronary heart disease and angina pectoris, but also has a preventive function on coronary heart disease and angina pectoris. Those who are not sick can take it to prevent coronary heart disease and nourish and strengthen the body. The usage of Radix et Rhizoma Ginseng should be decided according to the purpose of use. Different ways of taking it will have very different effects. Generally speaking, raw Radix Panax quinquefolii can make blood vessels constricted, which is a special medicine for treating bruises and cuts, and can achieve the effect of stopping blood flow. The powder of Radix Panax quinquefolium is made into a paste with wine and applied on sores and gangrene, which can dissipate blood and reduce swelling. The internal consumption of Radix Panax quinquefolii should be made according to the condition: raw Radix Panax quinquefolii should be taken to disperse blood, stop bleeding and relieve pain; cooked Radix Panax quinquefolii should be taken to replenish blood and the body. The preparation method of cooked Radix Panax pseudoginseng is to cut the raw Radix Panax pseudoginseng into slices, soak it in salt water, dry it in the sun and then grind it into fine powder. There are also raw Radix Panax notoginseng in a small bowl, the bowl built-in water, the amount of water to Radix Panax notoginseng can be absorbed to the degree of dryness, and then steamed soft, sliced, fried in oil to yellow, crispy, but not burnt, and then into a powder, will be ripe Radix Panax notoginseng. Both methods can be used. Cooked Radix Panax quinquefolius has the functions of tonifying qi, activating blood, replenishing blood, removing blood stasis and generating new blood. Stewing chicken with cooked Radix Panax quinquefolius is an excellent tonic for women after giving birth. In the famous recipe of Guangxi, it is called "Stewed Chicken with Radix Panax Quinquefolii". Cooked Radix Panax Quinquefolii with Radix Astragali, Radix et Rhizoma Ginseng, Fructus Lycii, Cortex Eucommiae and other medicinal herbs soaked in wine is "Radix Panax Quinquefolii Great Tonic Wine", which can replenish the blood and tonify the qi, soothe the tendons and activate the collaterals, promote the human metabolism and enhance the health. In recent years, "Tianqi Toothpaste" prepared with Tianqi has a good effect on preventing and treating dental diseases. Legend has it that when a butcher killed a pig and got a big pot of pig's blood, because his hand was cut, he took Tianqi powder to put it on the wound, and in his haste, he sprinkled some of the Tianqi powder on the pig's blood which was being coagulated. Soon, the pig's blood was turned into blood water. Therefore, to identify the authenticity of Radix Panax pseudoginseng, it is often used to test the blood clot, and the one that can be transformed into blood water is genuine Radix Panax pseudoginseng, otherwise it is fake Radix Panax pseudoginseng. When buying Tianqi, large, solid, smooth and without branches and claws are preferred. Tianqi is a perennial plant, it takes more than three years to harvest. The longer the planting period, the larger the size and the better the quality. Therefore, the size grade of Tianqi is based on the number of heads per city catty. For example, forty heads means thirty-one to forty per market catty, sixty heads means forty-one to sixty per market catty, and one hundred and twenty heads means eighty-one to one hundred and twenty per market catty; folk grading is not so strict, one hundred and twenty heads generally means not more than one hundred and thirty per market catty, and eighty heads means not more than eighty-five per market catty. In short, the higher the number of heads, the smaller the Tianqi, and the lower the number of heads, the larger the Tianqi. Twenty or forty heads of Tianqi are usually grown for more than seven years, which is the best among Tianqi. The processing of Tianqi should also be done in a proper way. After digging and taking it back, wash and cut off the fibrous roots (the fibrous roots can also be used as medicine if they are dried in the sun), put it under the sunlight, rubbing it while drying it until the roots are all dry, and no traces will be left until they are bitten by the teeth. If the processing to the final stage, replaced with a small wooden board rubbing, its surface is more smooth and rounded. In case of rainy weather, the roots should be roasted and dried with charcoal fire at 30 to 35 degrees Celsius, and they should be turned frequently and rubbed while being roasted, without stopping the fire in the middle, so as to prevent the temperature from dropping and the phenomenon of "back-sweating" occurring. A large amount of Panax pseudoginseng should be stored in a dry and ventilated place to prevent moisture, mold or insects; a small amount of Panax pseudoginseng can be stored in a sealed bottle for a long time.