Prune wintersweet twice or more. First, pruning after flowering to remove pests and diseases, too long branches, internal branches, weak branches and so on. , mainly to increase ventilation and light transmission, and can also be trimmed again. Second, the pruning of short branches and long branches in summer is mainly to control vegetative growth and turn vegetative growth into reproductive growth, which is conducive to more and better flowers. Third, a light cutting is carried out in winter, mainly to cut off pests and diseases, cross branches and so on. , mainly for shaping. If you make a stump bonsai, you can prune it in early spring (March-April) to make the trunk thicker and the crown thinner. The specific method is to cut off the thicker branches near the trunk. When re-sprouting, leave a few branches according to the shape, and gradually cut off the rest by sticking roots during the growing period, so that plum piles will show great strength in Cang Sang in a few years. Small pruning can be done during the growing period.