On that day, three men wanted to take a passenger car from Tianjin to Binzhou, Shandong. Due to the language barrier, they were told that the car wouldnt pass Binzhou, after they were in the car for a long time. So the driver let them off at Huanghua Expressway in Cangzhou. They had no choice but to walk in the emergency lane and try to stop the car. At this time, the traffic police patrol passed by and immediately stopped them.