The sandworm, commonly known as the "horned lacewing" by the people in the high altitude areas of southwest China, is a larva of the family of Lacewing, order of the broad order of insects. It is commonly known as "Anning earth ginseng", produced in the dry and hot valley of Lengping River, a tributary of the Xijiang River, and Anning River, a tributary of the Yalong River, and is abundant in the Lunglin Autonomous County, Panzhihua City, and the basin of the Anning River in Panxi. Sand crawlers like to hide in dark places during the day and come out at night. During the breeding period, the adults lay their eggs in the pebble crevices near the bank, and under suitable humidity and temperature conditions (the dry and hot river valleys in the west of Panxi have such conditions), the eggs hatch into the sand crawlers we usually say. It is determined that the sand crawler is rich in protein, a variety of amino acids, a variety of trace elements and a variety of medicinal ingredients. According to Chinese medicine, it is warm in nature and sweet in taste, and has the effect of tonifying the qi and benefiting the kidneys, suppressing the deficiency and consolidating the essence, and nourishing and strengthening the body. It can be called a good medicine and food. It is also known as "animal ginseng". Lacewing with horns belongs to the "lacewing" class, lacewing (dobsonfly), Megaloptera (Megaloptera) lacewing family (Corydalidae) insects, distribution in the Americas, Asia, Oceania and Africa, with four reticulated wings. The horned lacewing (Corydalus cornutus) is a large insect with a wingspan of about 13 centimeters and reticulate wing veins. The palpi of males are larger than those of females and can exceed 2.5 centimeters. The female lays whitish egg masses of up to 3,000 eggs at the river's edge. After hatching, the larvae crawl into the water and mature in 2 or 3 years. Growing larvae are blackish, mature larvae are sometimes up to 8 centimeters long and darker in color, and live under rocks in fast-flowing rivers. They have well-developed chewing mouthparts and feed on other aquatic insects and small invertebrates. It can bite people, which is very painful. After moving to the water's edge, wet soil, moss or rotting plants as a chamber chrysalis, and then feathered into adults.