This is a slop jar or spittoon (called tuoyu 唾盂 or zhadou 渣斗 in Chinese) of elegant proportions. Such vessels were used for storing the dregs of tea during the tea ceremony or for food wastes that were discarded during a banquet. This slop jar is covered with an olive-green glaze that falls short of the foot. It is a product of the Yue kilns, which were regarded as the premier kiln centre of the south and famed for their fine greenwares during the Tang dynasty (618–907).