Taiwan began developing its rail service during the Qing dynasty, using a 1,067 mm gauge. The Japanese colonial government, which ruled from 1895 to 1945, continued using that gauge. The system is now administered by the Taiwan Railway Administration, and the Taipei Metro and Kaohsiung Mass Rapid Transit use 1,435mm gauge. The Taiwan High Speed Rail which began operation in January 2007, also uses 1,435mm gauge. A 762 mm gauge line on the east coast was regauged to 1,067 mm when it was interconnected. (https://en.wikipedia.org/wiki/Narrow-gauge_railways_in_Asia)