At 3100 years ago, sea level moved approximately up to 5 meters hight that resulted the settlements of Xin-Cheng system located in the northern area of Lan-Yang river being flooded.
At 3100 years ago, sea level moved approximately up to 5 meters hight that resulted the settlements of Xin-Cheng system located in the northern area of Lan-Yang river being flooded.
3000年前海水面的上升，使当时的海岸线约上升到5公尺，溪北地区的新城系统的聚落因而被海水所淹没。