Travelers take photos as a steam train runs through yellow canola fields in Jianwei county, Leshan city in Southwest China's Sichuan province, on March 11, 2018. It's around this time of the year when people across the country flock to the small county for a spring outing in vast canola flower fields. What's equally famous there, is the steaming trains that continue to operate as the old steam engines gradually fade away from modern commercial use.