The distribution of mosaic stones in China. Slate resources in China are scattered, and there are certain characteristics in different places. For example, the rusty and emerald color-changing slate in Mentougou, Fangshan, Beijing. Milky white and yellow slate in Yixian, Mancheng and Xushan in Baoding area. Slate of various colors is produced in Zhenba and Ziyang in Hanzhong, Ankang and Yulin areas of Shaanxi Province. Shekan in Hubei, Wutai in Shanxi, Dingxiang in Zhejiang, Xiaoxian and other places also produce slate with different colors.