Blizzard Villa in detective novels is a noun with a specific reference, usually because the storm has cut off transportation and communication, forcing the search for a murderer within a closed environment.
At the same time, a classical Blizzard Villa case will certainly involve a murderer, often a serial killer to create a sense of urgency for the detective, and the culprit will inevitably be someone within the mansion, not an outsider.
And now, the situation at Storm Villa obviously met these criteria.
However, Lu Ban and the others were not aiming to find the murderer but to survive until the end of Soul Summoning Night.