CHINA
The clays for the two were taken, of course, from different quarries. Many pieces of U-ni-yao were céladons. The Tao-lo says that by some connoisseurs they were placed in the same rank with the wares of Lung-chuan, Chun and Chang, while by others they were relegated to almost the lowest rank among the products of the time. The reader may be warned here against confounding the Chien-yao of the Sung and Yuan dynasties with a ware of the same name but wholly different nature manufactured during the Ming dynasty (vide Ming Chien-yao).
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