Qingbai ware (青白 qīngbái „green-white“, formerly "Ch'ing-pai" etc.) is a type of Chinese porcelain produced under the Song Dynasty and Yuan dynasty, defined by the ceramic glaze used. Qingbai ware is white with a blue-greenish tint, and is also referred to as Yingqing ("shadow green", although this name appears only to date from the 18th century). It was made in Jiangxi province in south-eastern China, in several locations including Jingdezhen, and is arguably the first type of porcelain to be produced on a very large scale. However, it was not at the time a prestigious ware, and was mostly used for burial wares and exports, or a middle-rank Chinese market. The quality is very variable, reflecting these different markets; the best pieces can be very thin-walled.