Let me show you a set of data:
The national standard of People's Republic of China (PRC), Building Lighting Design Standard (GB 50034-20 13), stipulates the general illumination standard values of newly built, rebuilt and expanded residential, public and industrial buildings.
Room (place) datum and its high illumination standard
Value (lx)
Living room of residential building (general activity) 0.75m water level 100
The living room (writing and reading) of residential building is 0.75m, and the horizontal plane is 300 m, so mixed lighting should be adopted.
Dining room in residential building 0.75m table top 150
The general reading room of the library is 0.75m, and the water level is 300.
Office building general office 0.75m horizontal plane 300
Comprehensive supermarket business hall 0.75m horizontal plane 300
Hospital waiting room, registration hall, 0.75m horizontal plane, 200 meters.
School classroom desktop 300
School classroom blackboard surface 500
Public corridors in public places, 50 floors of mobile areas.
Escalator floor in public places 150
Rough machining of industrial construction machinery 0.75m horizontal plane 200