Xu Dayuan's brows were deeply furrowed.
"Right, that's the key issue. Mr. Liu, go find out about that, and also whether Doctor Lu's acquisition of the case files is legitimate, and whether these files are complete, we need to verify that too. I'll go interrogate now. He Chunyang has already gone to investigate according to the several time periods mentioned in the files."
Liu Yongxin shook his head.
"The times recorded in the files are not the actual times of the crimes; they are estimated by backtracking from when the victims' bodies were found, so there's room for error.
We found that the five victims mainly had unusual jobs, those with a strong degree of mobility, making it difficult to investigate the times they went missing. However, we can estimate the times of victimization of the other six people more accurately, and I think we should focus on investigating the six time periods related to Cui Guanglin."
Zhou Ning paused for a moment, then looked up and quickly said:
