Cactus, also known as Xianbal palm and Guanyin palm. Bitter in taste and cold in nature. The whole plant can be used as medicine. The fleshy stems of edible cactus are rich in vitamin B1, vitamin B2, carotene, iron, zinc and other trace elements and amino acids. If consumed regularly, it can refresh your mind, strengthen your brain, and strengthen your body. In addition, it also has the following uses:

1. Indoor greening: Cactus respiration is mostly done at night when it is cooler and humid. When breathing, carbon dioxide is taken in and oxygen is released.

2. Master of dust absorption: Placing a cactus indoors, especially a hydroponic cactus (because hydroponic cactus is cleaner and more environmentally friendly), can purify the environment.

3. Water storage function: There is a layer of wax on the surface of the cactus, and the leaves have evolved into needle shapes, which reduces the surface area and thus reduces water transpiration.

4. Other uses: Cactus contains poisonous alkali, which can act on the central nervous system after being eaten, causing people to have various illusions. It was an important plant used by Peruvian local sacrifices to connect with the world of gods from the first to the seventh century AD.