aspongopus, that is, Hemiptera, Heteroptera, Guahei stinkbug of stinkbug. It is a flying blue-black insect, the size of a nail and the shape of a water turtle. In spring and summer, crawling on the stems and leaves of crops to suck the slurry, and if you don't pay attention to it, you will release a strange and smelly gas, which will make people avoid it, thus falling into the notoriety of "fart bug" or "spanker". Fagopyrum aspongopus contains aspongopus oil. Once it is cooked, it is a delicious medicinal food, which can cure diseases and prolong life. Therefore, it has won the reputation of "aspongopus".