If it is not glazed or glazed at high temperature, it is non-toxic, while bright low-temperature glazing is toxic. \x0d\ In order to make the color of ceramic tea set more vivid, lead, the so-called ceramic pigment heavy metal, is usually added to the pigment. At high temperature, lead will seep out, but when the temperature is not very high, the seepage is not so thorough. \x0d\ x0d \ Selection of coarse pottery teacups: \ x0d \ Like teacups made of other materials, the selection of coarse pottery teacups follows the principle of "small, shallow, thin and white" and can be drunk in one gulp; Shallow is to prevent water from staying at the bottom of the cup; Thin because it can smell better; White is to set off the color of tea soup. \x0d\ Secondly, choose coarse pottery to wash tea. Kung fu tea sets must have three kinds of tea washing, that is, one pair and two pairs. The front washing is mainly used to make tea cups, the second washing is used to make cans, and the other is used to hold the water for washing tea cups. \x0d\ Finally, the choice of coarse pottery tea tray. The selection of coarse pottery tea tray, like other materials, should adhere to the principle of "wide, flat, light and white", the width should be based on putting more cups, the flatness should be based on placing the whole set of kung fu tea set smoothly, and the light color and white edge should set off the aesthetic feeling of cups and teapots.