Hundun denotes the primordial, undifferentiated chaos before heaven and earth had parted, a figure of Chinese mythology and cosmology. It appears in Warring States–era texts; in the Zhuangzi it is a faceless emperor who dies once seven holes are bored into him.
The Shanhaijing describes it as a faceless divine being lacking sensory organs that nonetheless sings and dances. The word later came to mean "chaotic" or "muddled," and is linked etymologically to the dumpling wonton.