In many cities, it is generally not allowed to set up restaurants in the residential buildings of bottom businesses now, because the cooking fume pollution is relatively large, which will damage the health of the residents upstairs. Therefore, the residents upstairs will react more strongly and will object. If your city has regulations on this area, you must get the commitment and permission of the upstairs residents before you can open a restaurant. Without the commitment and permission of the upstairs residents, it will be a great obstacle to open a restaurant, and even it will not succeed in the end. This needs to be considered by yourself.