Besides the custom of selecting homesites, southernners' uderstanding of the climate and seasonal change has become traditional wisdom in vernacular architecture. For example, southerners placed their houseposts up on stone or wood supports instead or burying them. This is to facilitate moving a housing, prevent wood corrosion caused by high humidity, and prevent ants, termites, or reptiles from crawling up into the house when fleeing a heavy rain or a flood. It is a taboo to build a house "against the sun path" and against the monsoon wind, since the scorching sun will make the house hot for the entire day, and the monsoon storm may blow away the roof or danger the house.