"Sailing Boat" is a kind of black stone tea-tray shaped in "Boat", The tray surface thins its edges from 1 cm to 0.5 cm to lighten the tea tray, creating a light feeling in its total style, and forms a "concave" to meet the "walking water" requirement in the tea brewing scene, leading the tea fast and efficiently gathering in the down water hole. The water storage section at the bottom of the tea tray elevates its refined calculated geometry blocks into three 3.5° slopes in the left and right, front and back, facilitate to collect the water to the outlet. And a metal knob mounted on the outlet is available for wet brewing and dry brewing.