What do you mean by the number of jumps in ancient buildings? Just "jump", "jump" and so on. Explain in your own words, don't take a paragraph from the internet. Thank you very much.

Hop count Terminology of large wooden structures in Song Dynasty. In the process of paving, it is called jumping out to pick out a layer of wood or block from the inside or at the mouth of the bucket. Pick one floor, call it a jump, pick two floors, call it two jumps. Generally, you can pick up four floors at most, which is called four jumps. Picking inward is called jumping in, and picking outward is also called jumping out. ?

I don't understand, Baidu chat.