It should be konjac. Amorphophallus is the general name of Amorphophallus in Araceae, also known as Amorphophallus, Amorphophallus, Hualien stem, Snake Valley and so on. Mainly produced in tropical and subtropical areas of the Old World. China is one of the places of origin, distributed in Sichuan, Hubei, Yunnan, Guizhou, Shaanxi, Guangdong, Guangxi, Taiwan Province and other provinces and mountainous areas. This is a perennial plant. Underground tubers are oblate, large, stout petiole, cylindrical, light green, with deep purple spots and palmately compound leaves. They grow in sparse forests and have many functions, such as dispersing toxin, caring skin, dredging veins, lowering blood pressure, losing weight, appetizing and so on.