Shallow relief has a low rise, a large compression of shape, a strong sense of plane, and is closer to the form of painting to a greater extent. It does not rely mainly on physical space to create space effects, but uses more painting techniques or perspective, illusion and other processing methods to create more abstract compression space, which is conducive to strengthening the dependency of relief suitable for the carrier. The ancient Assyrians of Mesopotamia were probably the artists who were best at performing art by this means. In a series of "Assyrian Hunting Pictures", they used the technique of bas relief very well to express the lively artistic image with a sense of rhythm and rhythm, and to show the inner feelings of the characters and animals with complex dynamics. The selection of the compression degree of relief space usually takes into account the function, theme, environmental location, light and other factors of the performance object, of which the environment and light factors play a decisive role. Excellent sculptors can always handle these relationships well, so that the works can achieve good visual effects.

When people talk about jade cultivation, the word "cultivation" not only tells us that jade is a living substance, but also contains a lot of knowledge. The maintenance of jade jewelry can be summarized as follows: the hardness of jade is very high, but it is easy to crack after collision. Sometimes, although the cracks cannot be seen with the naked eye, the molecular structure in the surface of jade has been damaged, with dark cracks, which greatly damages its perfection and economic value. Avoid dust as much as possible. If there is dust on daily jadeware, it should be cleaned with a soft brush; If dirt or oil stains are attached to the surface of the jade, they should be brushed with mild soapy water, and then washed with clean water. Do not use chemical degreasing agent or degreasing fluid. It is better to put it in the jewelry bag or jewelry box to avoid scratches or damage. If it is high-grade jade jewelry, do not place it on the counter to avoid dust and affect the transparency. Try to avoid contact with perfume, chemicals, soap and human sweat. If jade is exposed to too much sweat and is not wiped clean immediately after wearing, it will be eroded, causing damage to the outer layer and affecting the original brightness. Especially the "glass ground" jadeite and white sheepskin jade, which also avoid sweat and grease. Jade should be protected from the sun, because the expansion of jade in case of heat will affect its quality. Hibiscus jade, crystal, agate, etc. may even burst under high heat. Wipe the accessories with clean and soft white cloth, not with dyed cloth or hard fiber cloth. Jade jewelry inlaid with diamonds, rubies, emeralds and other precious stones should only be wiped with a clean white cloth to remove grease, dust, etc., which helps maintain and maintain the original quality. Keep proper humidity. The quality of jade depends on a certain humidity, especially for aquabilite and crystal jade. The surrounding environment shall not be too dry.

At present, most of the most influential sculptures in China and the West are made of copper. For example, Rodin's The Thinker, The Bronze Age, and The Statue of Liberty are all made of copper, Chengdu GRC line The lines are suitable for sculpture because of the texture, plasticity, unlimited specifications, rich color texture and other reasons of the copper material, which is also an effect that jade, wood and stone carvings cannot achieve. Jade carvings can only do very small works because of the material restrictions, recommend GRC line Due to the limitations of wood carving technology, there is no precedent for large-scale outdoor sculptures. The inheritor, whose bronze sculptures opened a new chapter in the 5000 year history of copper.

Button carving refers to the carving of the buttons on the upper part of the seal. It belongs to the category of round carving and has a rich three-dimensional sense. However, compared with round carving, it has three significant characteristics. First, the image is small, limited to the size of the seal, which is generally less than 10 cubic centimeters; The second is to show only the upper part of the object, rather than the round sculpture, which needs all-round performance; In addition, the performance content of button carving is mostly animals, especially animals in ancient legends, such as chi, lion, dragon, tiger, exorcism, taotie, etc. Therefore, button carving is also called "animal button". The history of button carving is linked with seals. Only seals can make buttons. According to relevant historical research, the earliest seal started in the Zhou Dynasty, more than 3000 years ago. The original seal is a symbol of power and status, and is a special item for princes, generals and ministers, and Dada dignitaries. The original seal button was also very simple and simple, just drilling a small hole on the top of the seal to wear strong ties for carrying, so the seal button is also called "seal nose". With the continuous development of history, a strict hierarchy has emerged in the materials and buttons of seals according to the different positions and official titles of users. For example, the official seal of the Qin Dynasty, in addition to using gold, silver, copper and other materials to distinguish the level of the official seal, also distinguishes the decoration of the button. In the Han Dynasty, the emperor used tiger buttons with jade seals, the crown prince, the lieutenants, the prime minister, the lieutenant, the sangong, and the left and right generals used gold seal tortoise buttons, and the officials of the two thousand stone Dai Lu used bronze seal elephant buttons Since then, the buttons used by all dynasties, from the monarch down to the officials of various products, were mostly chi, lion, dragon, phoenix, tiger, exorcism, taotie, unicorn, camel, bird, claw, bear, bat and other animals in the zodiac, depending on their positions.