It is a ritual vase called Yi, dating back to the middle period of the Zhou dynasty (1045-256 BC), a kind of gravy boat without a lid. Its physiognomy alludes to an animal, sometimes a dragon, a tiger, in our case an ox. The ovoid cup rests on three feet simulating bovine legs and the snout recalls that of a bovid. The grip or tail of the animal is represented by a dragon or a feline, in the act of jumping on the animal's back and biting it. It represents one of the most significant bronze artefacts in our collection.