Everything has certain characteristics and attributes, which is its own characteristics. For example, all green plants can carry out photosynthesis, so photosynthesis is one of the characteristics of such things. One of the characteristics of snails is shell-building, one of the characteristics of earthworms is digging, one of the characteristics of dragonflies is reconnaissance, one of the characteristics of bees is honey gathering, one of the characteristics of ants is gregarious, one of the characteristics of tigers is roaring, one of the characteristics of lions is hunting, one of the characteristics of wolves is attacking in groups, one of the characteristics of cheetahs is swiftness, and one of the characteristics of wild boars is trampling, in which one bear is slammed, one eagle is bombarded with clairvoyance, and one rabbit is timid and downwind. Bamboo is hollow, trees have roots, leaves are light, branches are tough, seeds germinate, flowers attract bees and butterflies, and trunks support and transport. One of the characteristics of a basin is holding, one of the characteristics of a watch is timing, one of the characteristics of a book is information, and one of the characteristics of a person is thinking and learning.