It is because Yushenglongzhijie's post-mortem treatment of the body is very professional, and the means of hiding evidence and disturbing the search are also very excellent.
At the beginning, Sun Yuan only knew that there was such a abnormal killer hiding in Dongmu City, and he didn't have any more specific clues before the plot began.
This made it very difficult for him to find the trace of the other party at the beginning.
Finally, he could only find time in his spare night to use the quiet [Initial Interpretation] soul chopping knife to bless the [Eye of Omniscience] and the stupid method of carpet flying search.
This is also when he almost checked the whole city before he caught