While Ni Cha went to make a phone call, Jiang Yuan, accompanied by Zhong Renlong, thoroughly searched the entire room and then went upstairs to check the rooftop.
There were many more footprints left on the rooftop.
Outside of the China area, criminals don't pay much attention to footprints. Mainly because not many people get caught because of them, criminals in the prison "The Great Learning" cannot learn relevant counter-detection techniques. They don't really study, let alone gather information from abroad.
By the time Jiang Yuan reached his level, footprint identification was like DNA analysis more than 20 years ago. As long as blood, semen, and hair were collected in a case, it was straightforward.
Jiang Yuan carefully examined the footprints on the rooftop, looked at the ropes and other items left behind, and then turned to Zhong Renlong, saying, "This rope-tying technique should be quite special. Can it be traced?"
