According to the specification GB50016-2014 "Building Design Fire Prevention Code" 2018 edition:
I. In addition to residential buildings with a building height of less than 27m, evacuation lighting should be installed in the following parts of civil buildings, factories and category C warehouses:
1 closed stairwells, smoke-proof stairwells and their front rooms, fire elevator rooms Front room or shared front room, refuge aisle, refuge floor (room);
2 audience halls, exhibition halls, multi-purpose halls and building area of more than 200m_ business halls, restaurants, studios and other densely populated places;
3 building area of more than 100m_ of the underground or semi-subterranean public **** activities;
4 evacuation of the aisles within the building of public ****;
5 densely populated areas;
4 public buildings should be equipped with evacuation lighting. p>
5 Production places and evacuation aisles in densely populated plants.