Is it possible that the transverse cracks at 10 cm under the window sill of the living room of the new building caused the foundation to sink?
Transverse cracks appear under the window sill of the new building 10 cm, which may be caused by foundation settlement and wall deformation.
It may also be that when the window was painted, the last paint was not completely dried, and the second paint was painted, which led to air drying and cracking in the later period.