Potential? It is the soul of a tree, a living thing, and the most intuitive expression of the balance between vegetative growth and reproductive growth of fruit trees. ? Shape? It is the shell of the tree, the size and structure of the trunk, big branches and branches on the skeleton of the fruit tree, which has great influence on the growth and development of branches, buds, leaves and fruits. ? Shape? It must be achieved by pruning. The train of thought and order of plastic pruning is: first cut the group, then cut the individual, then cut the big branches, and finally cut the group and branches.