Animal theory of local cattle

1. In the sultry weather in summer, usually in the afternoon, Cleisthenes can sometimes be heard in the wild, and his voice is deep and powerful, and he keeps repeating. People think that this kind of sound is made by an animal called the ground cow, but so far, no one has seen this kind of animal. People who are working in the field hear this sound. In order to confirm the existence of this animal, some people look in the direction where the sound is made, but when people get close, the sound appears in another location, and it always sounds far away. Some people think that this phenomenon is not caused by animals, but a natural phenomenon, which is explained as: when the weather is sultry, the underground water will rise into gas due to heating, and when the airflow gathers and passes through the holes on the surface, it will make this sound, so it is called "geogas". According to the long-term experience of working people, the explanation of this phenomenon generally tends to the latter. However, in some places in Chenghai District of Shantou City, the ground cow refers to the "narrow-mouthed frog". Generally, in the night after the rain in summer, the narrow-mouthed frogs get together and make a deep cry, which may be closer to the cow's cry, so it is called "local cow".

In the woodland or fertile soil of Paipu in Danzhou, Hainan, there is an underground animal called "ground cow", commonly known as "concave butterfly". The largest animal is only as big as a corn kernel. It consists of an oval belly and a small head. After the belly was crushed, it was a pool of blood. There is a crab-like clip in front of the head, which is used for attack or defense. When escaping, most of them drill sand into the ground to hide. Its "home" is concave to the ground like a funnel, all paved with fine sand. It is hidden on one side of the leak in the funnel. If it doesn't move, dig holes and accumulate fine sand, it will be difficult for people to find out where it is, only knowing that it is on one side of the tip of the funnel-shaped "home". It is said to have the efficacy of traditional Chinese medicine, mainly used for promoting blood circulation. It is one of the drug directions for preparing traditional Chinese medicine for treating gallstones, and can drive other drug-induced components to act on gallstones. The price of concave butterfly is very expensive. Newly dug live concave butterflies with a little sand and mud can be sold for RMB per catty in 400 yuan. After processing, steam it with warm fire (carbon fire is also necessary) until it can be ground, and it can be sold at RMB 1000 per catty.