In the 7th year of Tang Yuanhe (AD 8 1 year), Li Ao wrote Shouwulu, the first download of Kaibao Materia Medica in Song Dynasty. "There are two kinds of red and white, red is male and white is female." He also said, "Take its roots in spring, summer and autumn, and use it for both sexes." Li Mingzhongzi pointed out: "White enters qi, red enters blood, and red and white are used together to nourish qi and blood."
In clinical practice, Li Shizhen also attaches importance to the traditional experience of compatibility of red and white medicines. The tonic prescriptions with Polygonum multiflorum as the main medicine recorded in Compendium of Materia Medica are all compatible according to the principle that Polygonum multiflorum is 50% red and 50% white. It can be seen that Polygonum multiflorum Thunb has been divided into red and white since ancient times, and there is a tradition of combining red and white into one.
According to Tang Li 'ao's Compendium of Materia Medica, Syndromic Materia Medica and Records of Polygonum Multiflori, the original plants of Polygonum Multiflori in Polygonaceae are Polygonum Multiflori, namely Polygonum Multiflori, Polygonum Multiflori and Polygonum Multiflori. The original plants of white plants are Cynanchum bungeanum, Cynanchum komarovii and Cynanchum bungeanum, which are Cynanchum bungeanum, Cynanchum bungeanum and Polygonum multiflorum Thunb respectively. Among them, ear cowhide is mainly produced in Binhai, Jiangsu Province, with a cultivation history of more than 200 years, which is still used by the people. Geshan cowhide is mainly produced in Yanji, Jilin, and is a wild species. Euphorbia leaf cowhide is mainly produced in Taian, Shandong Province, mainly in the wild, but also in a small amount of cultivation.
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The sensitivity and single sensitivity of Cynanchum auriculatum planted in Binhai county, Jiangsu province were studied. Its original plant was Cynanchum auriculatum of Araliaceae. Auricularia auricula cowhide was gradually domesticated from the original wild species to the local endemic cultivated species in Binhai County.
The traditional processing method of Binhai Pulsatilla powder is as follows: the harvested Pulsatilla tuber is washed with clear water in late autumn and early winter, peeled with a bamboo knife, ground with a stone mill, suspended with a powder sieve or fine gauze and filtered to remove residues (the same as the method of tofu suspension), the powder slurry is naturally precipitated in a tank, then repeatedly stirred and washed with clear water to precipitate 1 once or twice, then the starch of Pulsatilla is suspended with emery cloth, and the water is cooled.
References:
Baidu encyclopedia-Polygonum multiflorum Thunb. coast