"Line 50" in building engineering refers to the elevation control line that pops up for interior decoration, and each floor is a circle line that pops up 50 cm above the design floor. When doing external wall insulation, it is said that it should be done from line 50, and it should be above plus or minus zero.
Architecture is the general name of buildings and structures, and it is an artificial environment created by people to meet the needs of social life by using the material and technical means they have mastered and applying certain scientific laws, geomantic concepts and aesthetic laws.