Choosing ceramic tableware can be done through four methods: "look", "listen", "compare", and "try". The detailed methods are as follows:

1. "Look" means carefully observing the inside and outside of the porcelain from top to bottom. Check if the porcelain glaze is shiny and smooth, with no scratches, small holes, black spots, or bubbles; Check if the shape is regular and if there is any deformation; Check if there are no damages on the surface; Check if the bottom is flat and placed steadily without burrs.

2. "Listening" means listening to the sound made when lightly tapping porcelain. If the sound is loud and pleasant, it indicates that the porcelain body is detailed and compact, without cracks or damage. When fired at high temperatures, the porcelain is thoroughly melted and the quality is relatively good.

3. 'Comparison' means comparing. The matching porcelain should be compared with each accessory at the same time to see if their shape and surface color tone are coordinated and consistent. Especially for complete sets of blue and white or small blue and white porcelain, because the color of blue and white will change with different firing temperatures, even if they are the same blue and white porcelain, the color can vary from dark to light. If a set of several or even dozens of pieces of cold porcelain has significant differences in the color of each piece of blue and white porcelain, the appearance of this set of porcelain will be greatly reduced.

4. 'Trial' refers to testing, fitting, and experimenting. Some porcelain comes with a lid, while others are composed of several components. Therefore, when selecting porcelain, don't forget to try to cover the lid and assemble the various components to see if they fit together.