Kiln change cup is a term that refers to the process of porcelain glaze changing its color unpredictably and naturally due to the temperature changes in the kiln during firing. Kiln change cup has various glaze colors, such as black glaze, hare's fur glaze, oil spot glaze, yohen glaze and mixed color glaze, each with its own characteristics and charm. Kiln change cup is a wonderful expression of porcelain art, and also a treasure in the collection world.

The maintenance of kiln change cup is mainly to keep its glaze color luster and texture, and prevent it from being polluted and damaged. Here are some common maintenance methods:

•  Cleaning: Kiln change cup should be rinsed with clean water after use, to remove tea stains or other dirt. If there are stubborn stains, you can use a soft brush to gently scrub, or use toothpaste, white vinegar and other cleaners to wipe. Do not use hard objects to scrape or use strong alkaline cleaners, so as not to damage the glaze layer.

•  Drying: Kiln change cup should be placed in a ventilated and dry place to dry after cleaning, to avoid moisture remaining in the cup or the bottom of the cup, causing mildew or cracking. You can also use a soft cloth to dry, but be careful not to leave lint or dust.

•  Storing: Kiln change cup should be stored in a cool and dry place, avoiding direct sunlight or high temperature and humidity. You can wrap it with paper or cotton cloth, to prevent dust or odor. If possible, you can use a professional ceramic storage cabinet or display cabinet, to maintain a suitable temperature and humidity. When storing, pay attention to separate them, to avoid collision or pressure.

•  Caring: Kiln change cup may appear dull and lose its luster after long-term storage. At this time, you can use tea water, rice soup and other moisturizers to moisten the cup body, to restore its original color and texture. You can also use a soft cloth dipped in a little vegetable oil to gently wipe the cup body, to increase its glossiness. But be careful not to use too much or too frequently moisturizers or oil, so as not to clog the pores of the cup body or change its glaze color.