Why did the police who bought tickets manually in Zhengzhou come to take photos of their ID cards?

Is to verify the railway e-ticket and real-name registration system registration system inspection.

According to Article 14 of the Interim Measures for the Implementation of Railway Passenger Electronic Tickets, passengers should cooperate with the train staff to verify the railway electronic tickets and check the real-name registration system registration system. Differential inspection is carried out during the operation of EMU trains.

The local train checks in at the gate. In case of special circumstances such as large passenger flow, passengers can get on the bus first and then make up the inspection. For passengers who take the sleeper, the train staff should register the sleeper and remind them to arrive at the station through the hand-held terminal.