The “Fu Hao” triple bronze yan (steamer) consists of two parts: the upper part (three cauldrons) and the lower part (the joint rectangular body). It is similar in function to the modern stove, lending it its name “the triple yan.” Fires can be lit in the lower part of the yan, which can also function as a steaming apparatus. The triple yan is able to cook several kinds of food at the same time, and represents one of the earliest ancient bronze cookers with multiple vessels existing today.