When do undercover reporters usually go to work?

Working hours are not fixed. Undercover reporters are either on the way to catch up with the manuscript or on the road, and their working hours are not fixed and it is very hard. An undercover whistleblower refers to a person who conceals the identity of a whistleblower, goes to a problematic community or MLM organization as a student or wage earner to verify the investigation, obtains first-hand information, and reports the investigation results to the relevant departments.