The Welshpool and Llanfair Light Railway shares the same track gauge(762 mm) with the Alishan Forestry Railway. In common, we also have sharp curves and steep slopes along the line. In terms of operation, they transformed from agricultural products and timber-carrying to tourism transportation. These similarities lead to the connection of the Alishan Forestry Railway and the Welshpool and Llanfair Light Railway as sister railways on September 27, 2017.