The three legs are shaped like giant breasts and have obvious characteristics of female genital worship. The shape of this painting is rare in painted pottery. Now it is collected in Yuangu History Museum of Fujian Province.

Tongwei was popular from Shang Dynasty to Spring and Autumn Period. There were many ears in the early Shang dynasty, and there were two straight ears at the mouth edge in the later period. In the early Western Zhou Dynasty, most of them had high neck and short feet, and often had ears. From the late Western Zhou Dynasty to the Spring and Autumn Period, it was mostly folded along the edge and folded into an arc crotch without ears; Some bellies are decorated with ribs.

Fang Wei:

In the Western Zhou Dynasty, there was a square, rectangular in shape, with a door that could be opened and closed at the lower part, and charcoal was put in the door. One of the collections in the Palace Museum also shows the image of a slave being punished as a gatekeeper in front of the door.

After the mid-Western Zhou Dynasty, in addition to cooking porridge, it was also used as a ritual vessel with the tripod. Generally speaking, the second and fourth containers are combined with the third and fifth containers of the tripod.