(1) There are three kinds of flower-and-bird paintings: meticulous brushwork, freehand brushwork and concurrent brushwork.
Meticulous flower-and-bird painting, that is, sketching the image of movement with thick and light ink, and then coloring it layer by layer; Freehand flower-and-bird painting is to draw objects in a concise and general way; Between meticulous painting and freehand brushwork, it is called part-time job.
(2) The creation of freehand flower-and-bird painting mainly uses lines to express objects. Through the skill of using a pen, it is required to eliminate the characteristics of specific shapes and lines from the complex state of things' lines and see the essential spirit of the object. The lines drawn with a pen are required to express real objects without friction and stains.
The pen is simple and complex, the state changes at will, and every turn is very interesting. The so-called "vigorous and graceful, vigorous and graceful" by predecessors is the concrete embodiment of the pen method. The so-called inexhaustible pen, the spirit can't see the pen, all from the pen.
(3) The so-called sketch is to "vividly", that is, to convey the vitality and different characteristics of flowers and birds endlessly. The so-called "Yu Xing" is to convey the author's unique feelings by describing flowers, birds, flowers and trees, and to convey feelings with things and express his will with things by means similar to "Fu, Bi and Xing" in Chinese poetry.
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.