Portulaca oleracea, also known as longevity vegetable, horsetail, grasshopper, horsetail, horsetail, acid amaranth, Japanese amaranth, five-element longevity vegetable, happy vegetable, horsetail, five-color amaranth, five-spice grass, sour rice vegetable, melon seeds, ant vegetable, nail vegetable, pig grass and so on. The spoken language in Beijing seems to be "two dishes of horses and people"