Hunan building roof why use blue color

The use of blue roofs in Hunan is closely related to the local climatic conditions and geographical environment. Hunan region, rain, air humidity, the use of blue as a roof can be effective moisture, and not easy to corrosion characteristics, at the same time, the blue is also in line with the Hunan people simple, real character traits. In addition, Hunan terrain is mainly hilly, high in the south and low in the north, the building is oriented more north to south, and the blue color is similar to the sky, which can visually expand the sense of space, so that the building looks more lightweight. Therefore, the use of blue design of the roof of the building in Hunan has a certain degree of rationality and practical significance.