In the space we live in, the outdoor environment is undeniably cut off, and a new independent world is born inside. The interpenetration of public and private spaces makes the objects more dynamic. This ashtray came into being under such a design concept. In the west, there is a kind of intertwined space, where the closed space and the open space meet in this space. Therefore, when the designer polished this ashtray, he handled the lines as if they were opened and closed, without moving too much However, it cleverly extends a microscopic sense of internal space, making the ashtray not like an ashtray, but it is indeed an ashtray, isn’t it.