QJ 7137 and QJ 6389 put on a volcanic display as they struggled to get train 22813, the 04:30 Haoluku to Daban freight, on the move on the bitterly cold morning of 11 December 2000. The train had been stopped at Jingpeng for the locos to take water and clean fires, allowing time for brakes and bearings to cool down in the sub-zero temperatures and making it more difficult to get the wagons moving again.