According to the Fire Services Law, the Building Design and Fire Prevention Code and other laws, regulations and standards, for the basement to do catering establishments, need to be equipped with independent fire safety facilities, should be set up independent smoke exhaust system, a sufficient number of fire extinguishers, the basement of the park converted into a canteen as long as it is in line with these provisions, it is possible to pass the fire requirements.
If you plan to do catering in the basement, you can go to the local fire department for consultation before opening, to ensure that their premises meet the requirements, to avoid leading to economic losses.