Chimei River Terrace of Ruisui Township, Hualien County, is located at the confluence of the Xiuguluan River and Chimei River. The single-sided mountains, circulation mounds and river terraces in this area are quite developed, and the Chimei Hamlet is located on the platform of this river terrace. Chimei River was originally a turbid current that entered the sea. But during the uplift of the coastal mountains, it continued to erode toward the source, which changed its course and converged into the current Xiuguluan River. In addition, the Chimei Fault is the most important active fault in the coastal mountains, with a total length of more than 30 km. The stratigraphic structure of the Chimei River on the west can be seen from Ruigang Industry Road.