Urobonos is also a kind of circle with a hole. He is a snake that has its own tail in its mouth. This symbol means infinity or cyclical life. In ancient China, the ouroboros was called "Zhulong" and was depicted as a creature that is both a dragon and a pig, biting its own tail. A pig-like dragon is considered due to the shape of the nose. Subsequently, he turned into an ordinary Chinese dragon, a symbol of good luck. The first figurines depicting dragons curled up in a ring belong to the Hongshan culture (4700-2900 BC). Such rings are found in burials, some may have been made for this very purpose, but at the same time there is a hole on many pendants, it is clearly seen from traces of wear that such jewelry was worn by living people) In ancient China, an egg was often placed in the center of such a circle, which the serpent covered. The space inside the ring in Chinese philosophy is reflected in the concept of "Tao", which means "the way of man."
The Shang era, photo from Wikipedia.
More neolithic jade jewelry, related mainly to the Hunshan culture):
Promotional video:
The Vychegda ring of the Vymsk culture - surprisingly all the same, the variety of purposes of objects similar at first glance) This is also a ring with animalistic images, but it has a completely different purpose - this is a calendar.