A tenmoku glazed ewer, fired during the Jin dynasty, excavated from the Liaoyang Yiguan Kiln in Yiguan Village, Wensheng District, Liaoyang City, Liaoning Province. This particular kiln site was discovered during the construction of the Manchurian Railway. The ewer is crafted from clay mixed with gravel, reminiscent of the northern Korean kilns, and features a straight neck and a small spout.

The Yiguan kiln sites yielded various wares influenced by the Zhongyuan (Central Plains) style, such as the Cizhou-type and Ding ware, spanning the Liao, Jin, and Yuan dynasties. This can be attributed to the policy of recruiting potters when the Liao and Jin dynasties expanded their influence southward. Additionally, this ewer exhibits a style similar to Henan Tenmoku, known as Henan Black-glazed wares. It offers insight into the cultural assimilation in the region, which witnessed repeated conflicts and defences among diverse ethnic groups.

As an excavated item, the ewer has a chipped spout and is missing the handle. However, the glaze retains a remarkable lustre. It was brought to Japan by Japanese settlers upon repatriation, with the origin of the piece documented on the back of the lid.