When dipping in sauce, sometime it is to dip too much, resultingin a bad taste, and scraping the sauce on the edge of the traditional plate can easily stain the plate and tabletop. Add small bumps on the plate inside, and the scraped dipping material flows back into the plate, keeping the plate and table top clean. When stacking, you can also leave space to maintain air circulation to avoid accumulation of water and bacteria. The shape of a slightlyprotruding mountain on the plate inside brings users a wonderful dining experience.