Is it ok to buy a house with a waistline? There is a waistline outside the house.

When buying a house, it is actually good to have a waistline layer, because Youxian used to be a kind of thermal insulation material, which is equivalent to installing a protective layer for the home. His position can be used as a seasoning, and some bricks can be placed on it, which will also be of great help to the later decoration.