Zhou Ning rubbed his chin, forcing himself to calm down.
"If we follow this line of thought, the bag was used up and immediately put away. The murderer found the bag and used it to hold the body."
Does this mean the victim's time of death was very close to the production date of this urea, and not about seven years ago as I originally analyzed?
The production date on the bag is January 10, 2002. Such items are rarely stockpiled in large quantities only to be sold over the course of one or two years; they are typically sold as needed, with at most a half-year's supply in stock. That's already the limit.
So the time of death must have been after January 10, 2002.
The victim was dressed in a dark gray Jagour wool suit with a white shirt underneath. Zhou Ning flipped over the victim's shoes, which were black leather oxfords tied with laces. Even though there were bloodstains, there were no sweat stains from long-term wear on the insoles; they were ninety percent new.