Where do three yellows and two whites come from?

Sanhuang and Erbai are famous products in Datong, Shanxi Province, namely: Astragalus membranaceus from Hunyuan, Huanghua from Datong, Huangshan medicinal eggs inside and outside Tianzhen, white hemp from Guangling and cabbage from Yanggao. Astragalus membranaceus is a valuable Chinese herbal medicine, which has the function of tonifying the body and benefiting qi. Hunyuan Astragalus membranaceus is famous for its long and smooth strips, bright skin, large powder and small hollow, and its medicinal value is higher than that of ordinary Astragalus membranaceus, so it is called Hunqi. The vast Hengshan area is the famous hometown of Astragalus. Hunyuan Huangqi Processing Factory is one of the main export processing factories of Huangqi in China, with an annual processing capacity of 1 million Jin. These astragalus membranaceus are exported to more than 7 countries and regions on five continents, and they have exchanged a lot of foreign exchange for the country. Yellow flower, also known as day lily, commonly known as day lily, is not only a kind of food with high nutritional value, but also a valuable medicinal material. Datong county's yellow flowers are famous for their long horns, thick meat, oily, crisp, clean mouth and delicious taste. In recent years, foreign trade units have often sent technicians to commune teams, taught production techniques, improved cultivation methods, popularized advanced experience, and fostered the production of yellow flowers, which greatly mobilized the enthusiasm of the masses to plant yellow flowers, and made the annual output of yellow flowers reach more than 2, Jin. Datong county's yellow flowers are exported to Hong Kong, Macao and countries on five continents. Compared with other yam eggs, the inner and outer Huangshan yam eggs in Lily Tianzhen contain more starch and are delicious. In recent years, with the development of China's foreign trade, foreign trade has also entered the international market and been highly praised. White hemp is a kind of plant with high economic value, guangling white hemp has a long planting history and is famous all over the country. It is characterized by bright color, thin and tough skin, slender fiber, soft and smooth rice. Cabbage is higher than Tam Soap. Cabbage grows on the saline-alkali beach in this area. The water and soil quality here make cabbage unique and famous at home and abroad. It is characterized by tight wrapping, heavy weight, less gluten, white quality, less water content, pressure resistance, rot resistance, long-term storage without knife rust after cutting, still sweet and delicious, and no spicy taste. These characteristics of Tam Soap Cabbage, despite the long-distance transportation and hot weather, the quality remains unchanged, and it can always maintain its delicious color. In recent years, the country has established an export base here, and more than 1, tons of cabbage are exported to all parts of Southeast Asia every year.