Why don't Dunhuang murals fade in most places? What are the characteristics of his painting tools and pigments?

Why don't Dunhuang murals fade in most places? What are the characteristics of his painting tools and pigments? The reason why Dunhuang murals do not fade for thousands of years is that the pigments used in Dunhuang murals mainly come from imported gems, natural minerals and artificial compounds. The pigments are mainly natural mineral pigments, plant pigments and synthetic pigments, supplemented by cinnabar, pearl arch, Huang Dan, cinnabar, ochre, earth red, stone yellow, realgar, lapis lazuli, copper chloride, stone green, patina, talc, kaolin, chalk, calcite, mica and so on. The ancients used these colorful natural mineral pigments to draw exquisite Dunhuang murals.

After the test of time, although Dunhuang murals have been affected by natural erosion and man-made destruction, the skin color of the characters in Dunhuang murals has changed. However, many mineral pigments belong to inorganic substances and are not easy to change color after a long time. After a thousand years, most of the paintings are still as bright as new. It is precisely because they have not faded for thousands of years that Dunhuang Mogao Grottoes have become the world-famous "Oriental Art Museum". In some special creative processes, mineral pigments are still essential, such as murals, rock paintings, ceramic production and so on. Many good raw ore resources of natural materials tend to be exhausted due to scarcity and large-scale mining.

Due to the scarcity of raw ore and synthetic chemical pigments, in order to explore the secret that Dunhuang murals are not old after thousands of years, members of China Artists Association are over 500 years old and have been preserved for many years. In Wang Yalin's studio, dozens of Dunhuang murals, large and small, are lifelike. Along a wall, square boxes of dozens of minerals such as penicillin, stone green, vermilion, silver, ochre, earth red, stone yellow, orpiment and clay are neatly placed, and test tubes filled with dozens of rocks such as red, yellow, green, blue, white, black and brown are even more dazzling, just like a "chemical laboratory".

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