On the first day the body was discovered, no particularly useful clues were found. After all, three months had passed, and it wasn't the initial crime scene. Plus, it was the rainy season, and a few downpours had washed away any traces.
If this were ancient times, this would be a cold case. Even in the period shortly after the founding of the country, there wouldn't have been any solutions for such a case. Luckily, now with advanced technology, surveillance, fingerprints, DNA, and other developments, it's not like there are no clues at all.
At least the victim's identity can yield some clues through DNA comparison.
Du Qiang got reprimanded by Old Zhao and had his day off for tomorrow canceled, making him work overtime to gather clues along the way, serving as a small penalty.
