When planting in winter, take the branches with vigorous growth at the top as the center to stem the extended branches and leave 50-60 cm for cutting. Under them, two opposite and forward-growing branches are selected as the main branches of the first layer, and 40-50 cm is reserved for cutting, but the second to third buds under cutting are reserved in the backward direction to extract the first large branch group, and the rest branches are generally not cut or thinned. In the second year of winter cutting, 40 ~ 50 cm of extension branches of main branches and big branches are cut off, and 50 ~ 60 cm of extension branches of central trunk are cut off. In the winter of the third year, the second layer of main branches and the second largest branch group on the first layer of main branches are selected. The cutting length of the extension branches of the central trunk and main branches is the same as that of the following winter, and the cutting length in the following years is 40 ~ 50 cm. In the fifth year of winter cutting, it takes about 5 ~ 6 years to choose the third layer of main branches, and the tree shape is basically completed. When the plants are connected, the extension branches of the main branches should be cut short or retracted properly, and the rest branches should be controlled by thinning, cutting and slowing without hindering the growth of the main branches. If the young trees grow vigorously, the plants with the extension branches of the central trunk 1 m or more can be cut short every year according to the requirements of the interlayer distance, that is, about 100 cm in the current year and about 80 cm in the next winter, so that the plastic surgery task can be basically completed in three years.