In the dazzling array of purple clay pots, the colors are colorful, red like fire, green like jade, green like jade, and purple like smoke. However, did you know that there is also a black purple clay pot, which may not be common, but it is by no means rare. This kind of black purple clay pot has actually existed since ancient times, and there are many treasures that have been handed down to this day. For example, the black sand that "grows flowers and reads" has an elegant appearance, as if it was an ancient scholar, while planting flowers and cultivating nature, while reading and discussing. Another example is the "Weiquan" black sand bamboo pot, its shape is unique, and the texture of the bamboo is clearly visible, as if it is a gift from nature, giving people a fresh feeling. Another example is the "Kangxi year" black sand copper handle pot, its design is ingenious, the copper handle is durable and durable, and the black purple sand pot body looks calm and atmospheric. These black purple clay pots, although the color is different, are also full of artistic beauty and the weight of history. They are a unique presence in purple clay pots and a treasure of Chinese culture. 
* Cheng Shouzhen made purple mud covered with ash antique pot.
So, where is the mysterious "black purple clay pot"?Let's unravel its mysteries and delve into its essence.
Qing Yongzheng Jingyuan Zhai black mud pile painted purple mud square drum belly pot.
The black mystery of the purple clay pot The black color of the purple clay pot often comes from two situations: "black mud" and "covering the ashes". What is black mud?This question is like a fog, and the explanations on the Internet are also varied. Some people firmly believe that black mud is black mud, and the black mud on the market is presented in front of our eyes only after the hands of manganese oxide;On the other hand, the pot covered with ashes is regarded as a black clay pot.
But in fact, black mud is not black mud, it is not artificially colored, but a unique color given by nature. Because the appearance of the ore is sometimes jet black, so it is named. In the "Yixing Huanglong Village Clay Physical Process Performance Test Report" of the Central Laboratory of Jiangsu Provincial Bureau of Geology and Mineral Resources, it is called "blue green mud".
Chen Mingyuan, black mud tunic potBeijing Poly Autumn Auction 2013Price realised: RMB 9,890,000The appearance of the ore is jet black, the texture is as hard as stone, the mica fragments are dotted like white clouds, and the light green bean spots are like jade inlays. The maroon spots and markings on some of the ore materials are sprinkled like the afterglow of the sunset, forming a gorgeous and colorful picture. The firing temperature needs to reach more than 1200, which is like a phoenix nirvana.
After firing, the ore presents a light brownish red and slightly yellowish hue, and the tire is slightly dry, but it is this dryness that gives it a unique charm. The white mica fragments remaining on the surface are as white as snow, and the yellow tones are set against each other, giving people a strong visual impact.
Well No. 4 black mud.
The appearance of the ore is like a rich and colorful painting, and the purple-black tone is like a black hole in the night sky, mysterious and profound. Its texture is hard, like a natural gemstone, and it knocks loudly. Pale green bean spots dot the dots, like green dots in jadeite, adding a touch of life to this deep purple-black. The firing temperature needs to exceed 1200, and under such high temperatures, the ore is like a phoenix nirvana, transforming from a silent stone into a brilliant gem. After the baptism of fire, it shows a light yellow and translucent red color, like the rising sun reflected in the morning glow, beautiful and warm. However, although the firing of the tire seems to be loose, it actually embodies a natural charm. The surface is dry and wet, revealing a natural sense of art. Those tiny black dots of impurities are like stars in the night sky, small but shining with a unique light. Although the exterior color is relatively gray and single, under the closer inspection, you will find that it contains rich layers and changes, like a mystery, waiting for someone to unveil it. 
Taixi mine black mud.
The appearance and texture of the material presents an uneven beauty, like a palette of nature. Its color is deep, with purple-black and deep purple-brown intertwined to form a dense block-like structure. It is hard to the touch, as if it is the mark of time, making people feel its calmness and perseverance. Pale green bean spots, bar-shaped textures, and dark red spots and spots are like a vivid picture. The white wax is like a pearl dotted in the picture, adding a bit of mystery and nobility.
The firing temperature is so high that ordinary people can bear it. It is only at temperatures above 1220 that it can bloom in its most brilliant brilliance. After the baptism of fire, it turned into a light red and slightly translucent gemstone, with a loose fetus and toughness. Fragments of mica remain in it, like stars, adding a bit of poetry to this world. The surface is dry and wet, and the color is slightly grayish, but it is also unique. This is the charm of the mineral, which has both rough and primitive beauty, but also contains rich inner strength. Every time you touch it, you can feel its tenacity that has survived the wind and rain but still stands. 
Big waterhole black mud.
What is dusting?The process of covering the ash was born in the ingenuity of repairing the clay on the body of the pot, and gradually evolved into a unique skill. Its original intention was to unify the clay color, and now it has turned into a unique art of modulating black.
Like the painter's ingenious arrangement, the dust-covering process turns the ordinary clay into a deep black, giving the body a different style. It is like a silent wise man, telling the precipitation of years and the wisdom of craftsmanship with deep black. "
Cheng Shouzhen covered the ball.
Covering ash, this unique pot-making process, has been quietly popular since the Qianlong Jiaqing period of the Qing Dynasty. Its original intention was to cover up the uneven mud color of the purple sand products fired in the kiln due to insufficient needle skills or not completely dried.
Nowadays, after years of precipitation and technical refinement, the plastering process has long surpassed its original practical purpose and has become a unique aesthetic expression.
Ash covering process. For pots that are a little underheated or need to change color, we have a unique treatment. They are placed in a clay bowl and gently covered with fine firewood ash to ensure impermeability. We opted for bran as the filling, but nowadays charcoal powder is often used instead.
In a low-temperature oxygen-deficient environment, we control the temperature below 1000 degrees Celsius and perform a second firing. This unique secondary treatment is like applying a layer of magic to the pot, which is thrown into the kiln and successfully changes the color and conceals its previous deficiencies.
Paulian nine-head rhythm (nine-piece set) pot (covered with ash).
The purple sand that has been covered with ash is breathtakingly rich in color. The black color is like a fine ink, which is deep and not too dull, but warm and moist like jade, full of texture. Nowadays, this process has become a trendy decorative technique for purple clay pots, leading the fashion trend. The technique of covering ash has special requirements for fire temperature, and not any mud can be tried at will. The degree of crystallization of vermilion is high, so the probability of successful ash covering is not high. The mud mixed with other pigments often produces a mottled "flower pot" phenomenon after being covered with ash. As for the bottom trough mud, the color after covering the ash is black with blue light, and the blue is glowing with blue, like a deep night sky, which makes people intoxicated.
* Yu Guoliang made a gray imitation drum pot.
When you first use a new ash pot, if you leave tea in it overnight, you may find that the tea becomes a little cloudy the next day. This is actually a normal phenomenon, which is the turbidity produced by the neutralization of theophylline and some acidic substances in the soot ash.
Don't worry, just soak it in water or tea for a few days, and carefully scrub the hard-to-clean parts, so that the charcoal ash remaining on the body of the pot can be completely removed, and the tea will be clear again.
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