Did the blue brick houses in the 1970s belong to a big family?

The blue brick houses in the 1970s belonged to a big family. People with some money just surround the mud embryo wall with blue bricks in front of the room for protection and decoration. People who can use a lot of blue bricks are either big families or bureaucratic families, and they have money and status at home. Blue bricks are all made of clay, which is the product of long-term weathering of some aluminosilicate minerals and has a particularly strong viscosity, hence the name.