Complex sentence: In order to avoid the wind and utilize sunlight and water, most yaodongs are distributed along the sides of the cliffs and valleys to conform to the terrain, in principle, forming three types of Yaodong.
Split into simpler sentences: In order to avoid the wind and utilize sunlight and water, most yaodongs are distributed along the sides of the cliffs and valleys to conform to the terrain. Consequently, in principle, forming three types of Yaodong.