Previously, hetian jade jade belt ooze YanHigh 7.9 CM wide, 7.7 CM diameter 6.2 CM183.3 gYan as a cook in ancient , the function is equal to the boiler now.The ide for retort, lower by li, is abination of a steam.By shaped like a tripod, three feet, foot between the fire heating.This device in hetian jade, for material, body with ooze, carving decoration, of primitive simplicity and elegant, grinding round, intact, is rare.