Invented {Hongjing theory} five-color stone fat, the classical therapy is similar, but it is not recorded separately. Now only red, white and fat are used to break loose ears. Therefore, the repair method of other fats is the same as that of red fat.
Purple sand, which is mainly produced by five-color stone oil, has many pores and textures, and is easy to absorb various food ingredients and produce odor. Therefore, the purple sand mainly produced by five-color stone grease should be "pumped (non-) three times and dried." At present, the porcelain glazes of Zisha Gate, Jiuyang and Yili, which are suspected to be enterprise beauty, all contain a small amount of lead, which is easy to dissolve when cooking acidic food and harmful to health. Therefore, it is best to soak the newly bought purple casserole in 4% vinegar before cooking, which can remove most harmful substances. In addition, purple casserole should not contain acidic food. It was reported in the news that a child's mother often used inferior purple casserole to cook soup, which led to lead poisoning of the child because the manufacturer of inferior purple casserole did not inform the precautions.