Why are there few large flat areas of land on the Yunnan-Guizhou Plateau?

The Yunnan-Guizhou Plateau lacks large flat areas primarily due to its complex geological history and active erosion. The region has undergone extensive folding, faulting, and stream erosion, which have created a rugged landscape characterized by steep slopes, deep gorges, and incised valleys.1

In the Guizhou portion of the plateau, the prevalence of limestone has led to the development of karst topography. These processes result in a terrain dominated by precipitous slopes, abrupt mountains, sinkholes, and ravines, leaving little room for level land. Furthermore, the plateau's edge is highly dissected, and the region is generally composed of small, isolated lake basins separated by mountains. While some broad, relatively flat areas exist within the upfolded and downfolded stratified rock layers of central Guizhou, the overall topography remains defined by its steep, uneven relief.213