If it belongs to the category of catering, it refers to the body parts of animals:

There are two explanations:

First, it refers to the internal organs of the thoracic cavity and abdominal cavity of animals;

second, it refers to the internal organs of the abdominal cavity of livestock, mainly including the large intestine, small intestine, stomach, abdomen, kidney, etc. The heart, lungs and liver of the chest cavity are called Sheung Shui.