"Crime is a risky business, so for criminals, they also need to find their own 'safe zone.' This area includes both a psychological safe zone and a location safe zone."
"They choose the most ordinary small van, which fits their psychological need for safety. This proves that they themselves come from this social stratum, their social interactions are also concentrated among people with the profession and income level of small van drivers; meanwhile, the commercial area surroundings fit their 'location safe zone.'"
"In summary, we can deduce: the suspects come from lower-middle-income groups, they might be illegal drivers operating small vans to pick up passengers around the commercial area; or they could be small merchants delivering goods with small vans near the commercial area."
"A key point here is: look at the small vans that come out daily for work, is there one that didn't appear between last night and this morning?"
