The short answer is yes. The Chinese made vases and similar products from fine clay which they exported to Europe. The English discovered the same type of clay in Britain. They called the clay "China clay" and the products made from it "fine China" after the country which pioneered the production technique.
Yes, for many hundreds of years the Chinese potters had and kept the secret.
they originate from china
China is a country and there fore it didn't originate.
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