A train enthusiast makes adjustment to his mini train during the 37th Vancouver Train Expo in Vancouver, Canada, Nov. 9, 2019. The two-day event showcased railroading models and train models from about 60 exhibitors from Canada and the United States. (Photo by Liang Sen/Xinhua)

An exhibitor displays his model railroad setup at the 37th Vancouver Train Expo in Vancouver, Canada, Nov. 9, 2019. The two-day event showcased railroading models and train models from about 60 exhibitors from Canada and the United States. (Photo by Liang Sen/Xinhua)

Train enthusiasts discuss on the mini rail train setup at the 37th Vancouver Train Expo in Vancouver, Canada, Nov. 9, 2019. The two-day event showcased railroading models and train models from about 60 exhibitors from Canada and the United States. (Photo by Liang Sen/Xinhua)

A train enthusiast looks at a mini rail during the 37th Vancouver Train Expo in Vancouver, Canada, Nov. 9, 2019. The two-day event showcased railroading models and train models from about 60 exhibitors from Canada and the United States. (Photo by Liang Sen/Xinhua)