While more stable terrain, where the landscape is uniform and buildings are located within the terrain, can make them quite resistant to seismic waves, Soil type can also cause problems, exacerbating resistance and leading to increased risk of damage. This is the case in China, where many buildings were built on uneven terrain and, due to their location in a mountainous area, landslides and interventions were made more difficult by the physical geography of the area, which which shows how even MEDCS can be more vulnerable for longer