In ceiling and interior wall plastering, what is plastering bottoming and painting?

1, in ceiling and interior wall plastering, priming and brushing refer to basic treatment. For the treatment of the bottom layer, don't press lightly, and rough the surface to facilitate adhesion with the surface.

2, in order to ensure that the surface has enough cohesive force, for the treatment of cement mortar at the grass-roots level, use a brush to brush the hair at the grass-roots level (brush the hair while brushing), draw a line after the cement surface reaches a certain strength, and use iron wire to brush the hair (draw a line).

3, refers to the use of lime mortar, mixed mortar, polymer water mortar, hemp knife ash, paper reinforced ash, particle insulation mortar, etc. Plaster the building surface with mud, or treat the ground with cement.