"Mustard garden painting biography - stone manual" says at the beginning: "painting stones should be divided into three methods. Those who observe people must say Qi and bone. Stone is the bone of heaven and earth, and Qi also contains Yan, so it is called cloud root. Stones without Qi are hard stones, while those without Qi are decaying bones." < / P >

this collection is divided into stone method, texturing method, various mountain head method, Liuquan waterfall stone beam method, etc., and many famous masters' methods of previous dynasties are cited

the method of painting stone can be changed from light ink first, and it is better to gradually use thick ink. There are many gravel at the foot of Dong yuanpo, which is painting Jiankang mountain. First, crack it to the edge of the stroke, and then break it with light ink. The deep recess is not far from coloring. The stone coloring should be heavy. The small mountain stone of Dong Yuan is called alum head. There is cloud in the mountain, the texturing method should be soft, and there is sand under it. Sweep it with light ink, bend it, and then break it with light ink

Grass insects refer to general insects. The body is divided into three parts: head, chest and abdomen. The adult has six feet and four wings. The number of abdominal segments is nine to ten, which should not be increased or decreased at will. Usually only seven stanzas are drawn, because the last stanza is connected with the tail, and the other two stanzas are hidden under the wing. Pay attention to the number of sections when painting larvae (such as silkworm, etc.)

Zhang Yanyuan of the Tang Dynasty said in the records of famous paintings of past dynasties that painting "has its similar shape, it has no charm; if it has its color, it loses its brushwork." this tells a dialectical relationship between form and charm. Charm comes from the vivid description of things by painters. If they abandon the accuracy of form, they lose the basis of talking about charm

it is difficult to draw grass insects. The elasticity of whiskers and hairs and the strength of teeth and claws must show high pen skills between square inches