This Ewer was made in China, Hunan province, Tongguan, early Tang dynasty (618-907). Glazed stoneware with molded and applied decoration, Changsha ware.  The body also covered in an olive glaze. 
 
Changsha was an important kiln area situated in South China during the Tang Dynasty. Also called Tongguan Kiln due to its discovery in today's Wazhaping, Tongguan Town, Changsha City in Hunan Province.
 
Changsha was active by the end of the Tang Dynasty (618-907), peaked from late Tang to Five Dynasties, and declined after Five Dynasties. Its main products were wares with a greyish-green glaze, but all iron based earth colours occur.