Mistaken by farmers for a weed, it is extremely valuable and was even commonly used by ancient emperors

Today I'm going to introduce you to a plant that looks very much like a wild grass in the countryside, and this wild grass also has certain medicinal value, but because its appearance is too ordinary, farmers all mistake it for a weed.
The name of this wild grass is "Ghost Chili", also called "Liao Ge Wang", Shan Huang Pi, Ji Duan Chang, Jin Yao Dai, and so on. Ghost Chili can reach a height of about 2 m, and its leaves are oval-shaped.
It produces fruit in summer. This fruit is green when unripe and red when ripe, and it is generally more common in the Guangdong region.
It is said that Ghost Chili was commonly used by Zhao Kuangyin, because before he became emperor he had his life saved by this plant, and after he became emperor he kept searching for this herb, and once he found it, it was used as a common herb for treating soldiers' wounds. However, this herb also seems to be highly toxic, so everyone had better not use it carelessly!