The character “坔” (pronounced similarly to “di” in Mandarin and “lo̍h” in Taiwanese) refers to a sinking, muddy wetland. Caodaizai is also sometimes pronounced Caowazai. This wetland was formed after the 9/21 earthquake and is home to the famous Lazy Forest attraction. This is the highest-elevation tea garden in the ShanLinXi tea system, sitting at close to 1,950 meters.
Calling it a tea region is a bit of a stretch since there are only a handful of small-scale tea plots. The plots closest to Lazy Forest are the highest, sitting near 1,950 meters, making them the peak of the ShanLinXi tea system. There are a few other tea gardens nearby; using Xishan Road as a dividing line, the plots above the road sit at 1,700 meters, while those below range between 1,400 and 1,700 meters.