As rural children, there is no desirable summer camp and no cram school for charging and refueling. The main activity of summer vacation every year is to help parents do farm work. Summer is the season when crops grow, and of course weeds grow wildly. Weeds seem to be more photosynthetic than crops and always grow more luxuriantly than crops. If weeds are not removed in time, crops will soon be eroded by weeds. In order to create enough growth space for crops, it is necessary to weed farmland repeatedly. Therefore, in rural areas.

There are many kinds of weeds in the field, but the most troublesome one is a kind of weeds called Pennisetum, which is called hemp grass in my hometown, because they are always dense and numerous. This kind of grass has a characteristic that it is particularly tenacious and drought-tolerant. In our hometown, it is often ten years and nine droughts, with very little rain, especially in summer. Often, crops are wilted because of lack of water, but this kind of grass can be crazy.

It's time to water the crops every time the grass is mowed down in Abel Tamata. It's often not long after watering, the crops just come back to life, and this kind of grass grows again. We poor children have to go to the fields to weed again before they can play, and the scorching sun above our heads will criticize us until the crops grow taller and suppress its momentum, so we don't have to weed any more. At this time, we are stripped of several layers of skin by the sun, and the summer vacation is coming to an end.

After working in traditional Chinese medicine, I always have a habit of studying the efficacy and medicinal value of some plants I often see in my hometown, but I never thought that Setaria viridis would be a traditional Chinese medicine, let alone what medicinal value it would have, because I was so familiar with it that I always thought it was too ordinary, but it was not easy for people to pay attention to it. By chance, I saw the introduction of Pennisetum in Chinese Materia Medica and began to pay attention to this familiar old friend.

Also known as stachydrine, sandworm medicine and horsetail, Pennisetum viridis is distributed in almost all provinces in China. It can clear away heat and toxic materials, dispel wind and remove dampness, and kill insects. It can treat colds, headaches, rheumatoid arthritis, gastroenteritis, hernia, beriberi and carbuncle. External application of fresh products after mashing can also treat knife wounds. Modern research has found that Pennisetum also has the effect of lowering blood pressure.

There is almost no use of foxtail grass in clinic, and it is even hard to find it in Chinese pharmacy. In today's increasingly scarce resources of traditional Chinese medicine, foxtail grass can be obtained everywhere, with high quality and low price. It is undoubtedly a good thing to develop and use Pennisetum.