You can't eat, you can only watch. I remember when I was in college, there were several pots of pocket coconuts in the school. A classmate is greedy for fresh food, and his mouth is full of astringency. The seeds or fruits of palm plants such as coconut and date coconut are edible; Tanya's feathered stems and some kinds of stems are rich in starch and can be extracted and eaten; After the inflorescence of sugar coconut and some species of solanaceae plants is cut, a large amount of juice can flow out, which can be made into sugar after evaporation or become shochu after fermentation. Some kinds of wood are hard and can be used as building materials; Leaves can be roof coverings, woven hats or baskets, etc. The leaves of mallow can be used as fans; The fiber of leaf sheath (that is, brown coat) and the fiber of coconut shell can be woven into rope or hemp fiber or broom; Coconut meat can be squeezed into industrial or edible; Betel nut is used as medicine or dye; The skin and kernel of oil palm can be used to extract industrial oil or edible oil.