Happy trees with variable lateral stems are compact in shape, firm in skeleton, ventilated and transparent, with large fruiting area, high yield and moderate crown shape, which are suitable for medium and small density gardens, but low in early stage. The crown height is 3 ~ 3.5 meters. The tree has a central trunk with a trunk height of 40 ~ 100 cm. The whole tree has four main branches, which are not layered and scattered on the central trunk, and finally form four main branches in four directions, which do not affect each other. After the last main branch is formed, it will fall down happily. The distance between main branches is about 50 cm, and the opening angle of main branches is 40 ~ 50. Each main branch has 2 ~ 3 side branches, the first side branch is 50 ~ 60 cm away from the central main branch, and the second side branch is 40 ~ 50 cm away from the first side branch, which is scattered around.

After the direct seeding seedlings are grafted or grafted, the seedlings (or new shoots) are cut short or cut off by 55 ~ 1 10cm.

The central leading group has been formed. Short-cut the central main branch every year, and select the upright and strong branches from the strong branches under the scissors as the extension branches of the central main branch.

Cultivation of main branches and lateral branches. Cultivate a main branch every year, and from the strong branches pumped under the central leadership cut every year, choose one with large angle, vigorous growth and good direction (the first main branch generally faces south, and it is downhill when cultivated on sloping land, and other branches should be staggered with the existing main branches) as the extension branch of the main branch. Branches are open in August-September. By pinching in summer or pruning in winter, a reasonable arrangement of lateral branches is gradually cultivated. The main branches are required to be scattered in the direction, and the angles of the main branches and the side branches are reasonable.

Utilization of other branches. Strong branches that are not used as backbone branches every year should be rationally utilized. For the competing branches whose main branches are extended, pulling branches changes the direction, increases the angle, promotes flowering and promotes the next year's fruit. Other branches were cored 2 ~ 4 times in summer to form auxiliary branches, which accelerated the formation of crown and promoted early fruiting. With the formation of the tree, the auxiliary branches are gradually sparse.

Fall down happily. When the uppermost main branch is formed, the central trunk opens, forming the delayed opening shape of the lateral trunk.