Leave a trunk, then trim it according to its own growth and development characteristics to form a reasonable skeleton. Generally, there are three tree types, namely, less trunk, single trunk and more trunk. The trunk is less clustered; Leave 3-4 basic branches as main branches and extend obliquely in different directions. The main branch bears lateral branches, which bear vegetative branches and fruiting mother branches. The overall formation is still a happy tree shape, simple and dry; This tree should keep a trunk, select 3-4 evenly distributed main branches on the trunk, select side branches on the main branches, and plant secondary branches and fruiting mother branches on the side branches to form a short trunk. Multi-stem cluster; In this crown shape, 3-4 basic branches are selected as main branches and the rest are cut off from the base. If the number of basic branches is less than the number of main branches, you can choose from budding branches. After selecting the main branch, cultivate the fruiting branch and vegetative branch.