A guang is an ancient Chinese ritual wine pitcher, made of bronze

Bronze

Bronze is a metal alloy consisting primarily of copper, usually with tin as the main additive. It is hard and brittle, and it was particularly significant in antiquity, so much so that the Bronze Age was named after the metal...

. They were used during the Shang

Shang Dynasty

The Shang Dynasty or Yin Dynasty was, according to traditional sources, the second Chinese dynasty, after the Xia. They ruled in the northeastern regions of the area known as "China proper" in the Yellow River valley...

 and Zhou

Zhou Dynasty

The Zhou Dynasty was a Chinese dynasty that followed the Shang Dynasty and preceded the Qin Dynasty. Although the Zhou Dynasty lasted longer than any other dynasty in Chinese history, the actual political and military control of China by the Ji family lasted only until 771 BC, a period known as...

 dynasties, from around 1700 to 900 BCE

Common Era

Common Era ,abbreviated as CE, is an alternative designation for the calendar era originally introduced by Dionysius Exiguus in the 6th century, traditionally identified with Anno Domini .Dates before the year 1 CE are indicated by the usage of BCE, short for Before the Common Era Common Era...

. Guangs have a vertical handle at one end and a spout at the other, both zoomorphic, and were often highly decorated with taotie

Taotie

The Taotie is a motif commonly found on ritual bronze vessels from the Shang and Zhou Dynasty. The design typically consists of a zoomorphic mask, described as being frontal, bilaterally symmetrical, with a pair of raised eyes and typically no lower jaw area...

. The handle of the guang is of often in the shape of the neck and head of an animal with stylized horns, and the spout of the vessel is in the form of the head of a creature whose mouth constitutes the end of the spout.