Why are the roofs of residential buildings in Northeast China mostly spires?

rain and snow protection are better. In addition, the northeast is rich in wood resources, and the process of building houses with spires is simpler. In addition, the spire house also has the function of heat preservation. Domes will be built where there is a slight shortage of wood. Because it will save wood. For example, houses with domes can be seen in most rural areas of Liaoning Province.