Proportionality Is required to be in a certain relationship, especially the relationship between far and near, distance, etc., can not be too different, the difference is too large to lose the relationship, no difference is disproportionate. But it should be noted that painting is art, that it is the truth of art, not the truth of science, and does not require accurate proportions like natural science. For example, we painted Huangshan's "Distant View of the Bright Peak", the weather station on the top of the light, so small that it is almost invisible, and if it is really painted in proportion, it will obviously affect the artistic conception and artistic effect. Methods such as looking closer and pushing far away are allowed, but there are certain limits, so there is a saying in Chinese painting theory called "breaking the convention without losing common sense", which is also in line with the theory of "between similarity and dissimilarity".