But the man seemed to see through Zheng He's mind and said, "The signal here is not very good, cellphones and such don't work well here."
It's less suspicious to straightforwardly confiscate cellphones; a signal jammer is the best choice.
It would be impossible for anyone wanting to call the police or contact friends to send out an SOS message.
As for after-sales service, ineffective products, or coming back later with complaints… their organization generally harvests a batch of "leeks" and then moves to another city, staying in each city for only two or three days. At present, this dilapidated building is rented by the day, so they fear nothing.
Hearing this, Zheng He and the others looked slightly stunned; it seemed like the live broadcast had already been cut off, expecting online friends to rescue them seemed unlikely, they could only hope that the production team would quickly send someone over to check what was going on.