Fifteen years ago, the Zhongkeng Historical Trail in Shuangxi was still a legendary secret route in the social networking of mountain climbers; 15 years later, the Zhongkeng Historical Trail has become one of the most popular hiking routes on the famous Middle Route of Tamsui-Kavalan Trails. Along the historical trail, crossed the stream several times, and the scenery of terraced fields, grasslands and streams is intoxicating.