The so-called sketch is to convey the vitality and different characteristics of flowers and birds "abnormally and endlessly". The so-called "Yu Xing" is to convey the author's unique feelings by describing flowers, birds and plants, and to express his will by means similar to "Fu, Bi and Xing" in China's poems. The so-called freehand brushwork is to emphasize the leading role of meaning, that is, to express the author's feelings vividly like China's calligraphy art, that is, not to limit the expression of thoughts and feelings to sketching objects.
Therefore, the conception of China's flower-and-bird painting is often related to personnel. Not painting flowers and birds for the sake of painting flowers and birds, nor copying nature, but firmly grasping the relationship between animals and plants and people's lives, thoughts and feelings, and strengthening performance. It not only attaches importance to reality, but also requires flower-and-bird painting to have the cognitive function of "knowing the name of a husband, a bird, a beast and a tree", attaches great importance to the expression of the concept of beauty and goodness, emphasizes its pleasant function of "grasping nature and diverting spiritual reverie", and advocates that people's interest, sentiment and spiritual life can be influenced through the creation and appreciation of flower-and-bird painting, and expresses the author's inner thoughts and pursuits.
In terms of modeling, China's flower-and-bird paintings pay attention to form instead of sticking to form, and even pursue "similarity is not similarity" and "between similarity and dissimilarity" in order to express the object and show affection for the author.
Highlight the main body in composition, be good at tailoring, and pay attention to the contrast between reality and reality in layout. Moreover, in freehand flower-and-bird painting, he is especially good at writing poems with calligraphy and painting style, supplemented by seals, which has become a comprehensive art form based on painting.
In terms of painting methods, flower-and-bird painting is more specific and implicit than landscape painting, and richer than figure painting, so meticulous color setting is more realistic or has certain decorative significance, while freehand flower-and-bird painting is more concise, more procedural and difficult.