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While conducting exercises, the troops are exercising defense missile systems, and Bai Liang cannot be put into operation!! Hehe!!
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China means porcelain.
When our ancestors were dealing with foreigners, I was famous for my porcelain.
So China is China.
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Because the capitalization of China is porcelain, at that time, Chinese porcelain was famous in the world, so it was called China
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The original meaning of China was porcelain, and in the eyes of Westerners, mysterious China was a porcelain-rich country, so they called China China
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China means porcelain, because ancient China was famous for porcelain, so it was named!
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China means "ceramic" in English
China's ceramic technology is mature, it is the origin of a variety of famous ceramics, and was deeply loved by Westerners in ancient times. Ceramics has naturally become synonymous with China
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Pottery is a type of clay that is molded, dried and fired. Before the invention of pottery, people used natural containers such as scoops, concave stones, and mussel shells. In order to heat food, humans can only use scorching stones to continuously throw into the water containing the food until the water boils.
Therefore, there was an urgent need for a container that could withstand heat, be lightweight, and be strong.
In the Neolithic period, 7 8 thousand years ago, clay was found to be plastic. As long as the clay is made into different shapes and the blanks are put on the fire to roast, the minerals in the clay can be chemically changed, and a new substance can be generated - pottery.
4,000 years ago, the production of pottery was greatly changed due to the further increase in the combustion temperature, the invention of the potter's wheel for making special billets, and the addition of admixtures such as iron oxide to clay. For example, the black pottery unearthed in Longshan, China, is uniform as a whole, and the walls are as thin as paper. The painted pottery unearthed in Yangshao has been mixed with iron oxide to become red and mixed with manganese oxide to become black.
By the Tang Dynasty, the production of painted pottery reached its peak. Its glaze colors include yellow, green, brown, blue, black, white, etc., coupled with the study of firing technology, it has become a famous Tang Sancai in China.
Porcelain was developed on the basis of pottery, and it was also a great invention of the ancient people of our country. In the Han Dynasty of our country, three major breakthroughs in technology promoted the birth of porcelain. First, the selection and processing of raw materials, select clay such as kaolin with an iron content of 1 2, go through steps such as screening, washing, and panning, and finally make a billet.
The second is the use of glaze, which is an oxide and also a flux. The main component of the glaze coated in the original porcelain was calcium oxide, which gradually developed into lead glaze, copper glaze, cobalt glaze, etc. The third is a further increase in the combustion temperature, thanks to an increase in the quality of the fuel, such as the replacement of charcoal with hard coal.
In addition, the invention of blast equipment and the design of porcelain kilns have made the kiln temperature as high as 1200° or more. It is precisely because of the progress of the above-mentioned technology that in the late Eastern Han Dynasty, the people of our country have been able to burn celadon with sound and smooth surface. In the later Tang, Song, Ming and Qing dynasties, it developed rapidly.
From ancient times to the present, Chinese porcelain in a variety of shapes and colors can be described as a unique in the world.
European porcelain was introduced from our country. At the end of the 17th century, the Italian Holy See sent a priest named Antello to Jingdezhen, China to learn porcelain-making techniques. It was not until 1709 that hard porcelain could be produced in Germany, and in 1740 it was possible for France and Germany to be fired in real hard porcelain.
So in English, China and porcelain are the same word (China), and the reason for this can be imagined.
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Yours may be the dry kind, and there is iodine deficiency, just like the peeling of the palm, it is also iodine deficiency. You need to eat more iodine-containing foods.
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