The first step of bonsai modeling is subtraction, that is, cutting out the excavated materials. Before cutting, the materials should be inspected from different directions and different viewpoints, scrutinized and conceived repeatedly. According to the growth characteristics of materials and the existing morphological conditions, imagine the tree shape of bonsai in the future (you can draw design drawings first), including the direction of trunk, the spatial position, shape, direction, length and crown shape of branches, etc. , and determine the best plan for cutting and planting.

The second step is to add, that is, to plant and cultivate the intercepted materials, and to promote their survival through scientific maintenance, so that the buds of the trunk sprout new buds and grow new branches. In order to ensure the success of the addition, it is generally planted in the ground or in a large pot. Avoid light properly before germination, create a humid and ventilated environment and prevent pests and diseases. Through scientific conservation, strong new branches are cultivated.