Introduction to Chiyu

Red feather, red Joan. After Buddhism was introduced into China, the title of ancient jade was changed to "agate". It is a kind of agate, named for its red color. Can be understood as red agate. Biography of the Later Han Dynasty in the East: "It was also a country in ancient Su Shen. It is more than a thousand miles northeast of Fuyu, bordering the East China Sea in the south and lying in the north. I don't know where its north is. This land is mountainous and dangerous. People look like husbands, but their words are different. There is grain, hemp, ruby and good mink. " 1 is a war red produced in Chaoyang City, Liaoning Province. The ancient saying that Nanhong called it "ruby" can only prove that it is agate, not ruby. For the introduction of Nanhong, please refer to the entry of Baidu Nanhong Agate.