During the Japanese colonial period, in order to facilitate transportation and manage the indines, the Pyanan Historic Trail began to be built in March of the 7th year of Taisho (1918). The route goes through Huanshan, Lishan, Heping District, Taichung City, Cuiluan, Wangyang, Hongxiang, Ruiyan, and Wushe, Renai Township, Nantou County, with a total length of about 120 kilometers. It was completed in March 1921. This route was originally an aperture for the communication between the north and the south of the Atayal people. After excavation, it also became an important road for the "group migration" of the Atayal people. At present, this historic trail has been replaced by the Yilan branch line of the Central Cross-island Highway and the Lixing Industrial Road, leaving only two sections of the trail that do not overlap with the highway. One is the section from Yorkejiaoxi to Siyuan Yakou, and the other is from Lishan Anbu to Fushoushan farm.
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