Not long ago, I went to the West Yorkshire countryside in England. In addition to visiting the scenic spots, I also took an old-fashioned steam train. This line runs from Keighley to Oxenhope, with a total length of about 8 kilometers. It is no longer a normal railway passenger line, but a tourism project run by volunteers. When we got on the train at Keighley and set off, we saw someone setting up folding chairs and music stands on the platform, forming a semicircle, thinking there might be a band performing. Sure enough, when we returned by car more than an hour later, we were greeted by the sound of…