For a cylindrical crane arm like this, if a rope had been wrapped around it for pulling, the topmost part would have been under the heaviest load and would show the most wear.
However, the lower part, due to obstruction and limited viewing angle, is difficult to observe in full detail.
Just as everyone was puzzled and looking at each other in confusion, Jiang An raised his hand to point at the crane arm: "Everyone, please look at this position on the crane arm."
"There are obvious marks left by long-term rope compression. Judging from the shape and extent of the marks, the rope should have been hanging for quite some time, possibly months ago—everyone, pay attention to the edges of the marks and the grooves inside, which have already gathered a thin, even layer of dust."
"Impressive, truly impressive!"
Someone among the on-site investigation personnel couldn't help but lowly exclaim in admiration.
