For example, I imagine a bowl (or container) has two layers, and the inner layer is no different from ordinary bowls, except that the outer layer and the inner layer are connected and sealed like thermos bottles, but they are not completely sealed. If the bowl (or container) is opened somewhere, people can easily inject cold water or ice water from the opening, so that the rice can be cooled quickly, which is beneficial to work. Or the weather is cold in winter, and the food is easy to get cold. In order to keep warm, hot water can be injected into the interlayer. ...
This idea is an idea, and then I will make one or several samples according to this idea and take them to the State Patent Office to apply for a patent. In the future, I can open my own factory or find a manufacturer to produce and sell this product. No other manufacturer (without my authorization) can produce this product according to this idea.
My right is a patent right.