Why do Zen masters tie the rocks with cord?

– Provide a very brief statement claims and evidence format answering the question ” Why do Zen masters tie the rocks with cord?”
– Write a scholarly paper, which gives the Reasons why Zen masters do tie the rocks with cord! Since we are not experts in the subject every claim we make have to be supported with scholarly evidences from someone who is professional on the matter, and make sure to in-text cite each evidence. Be careful from any in-text citation mistakes.