Railway emergency team crawls across thousands of miles to remove ice to ensure safety. In the early morning of February 4, the temperature in Yinchuan had reached nearly minus 10 degrees Celsius.
An emergency snow removal team was lying in the ice and snow, looking for icy spots with wooden sticks. Since the track is basically flush with the ground and the car body is only twenty or thirty centimeters above the ground, it is impossible to observe the icing conditions on the bogie and car body floor from ordinary angles.