According to the "Urban Gas Safety Management Regulations", gas cannot be installed and used in ().

According to the "Urban Gas Safety Management Regulations", gas cannot be installed and used in the following places: 1. Basements, semi-basements and ground floors of high-rise buildings; 2. Places with densely populated areas Basements, semi-basements and ground floors; 3. Underground shopping malls, underground parking lots, underground garages and underground warehouses; 4. Basements, semi-basements and catering service establishments on the ground floor; 5. Basements, semi-basements and entertainment venues on the ground floor; 6. Basements , schools, kindergartens, nurseries and training institutions in semi-basements and ground floors; 7. Medical institutions, nursing homes and welfare homes in basements, semi-basements and ground floors; 8. Hotels, hotels and hotels in basements, semi-basements and ground floors; 9. Basements , semi-basement and ground-floor office buildings, commercial buildings and office buildings; 10. Basements, semi-basements and ground-floor libraries, museums and exhibition halls; 11. Basements, semi-basements and ground-floor gymnasiums, swimming pools and gymnasiums; 12. Basements , theaters, cinemas and performance venues in semi-basements and ground floors; 13. Indoor parking lots and gas stations in basements, semi-basements and ground floors; 14. Storage places and factories in basements, semi-basements and ground floors; 15. Basements, semi-basements and Electrical facilities and communication facilities on the ground floor; 16. Underground passages and underground tunnels in basements, semi-basements and ground floors; 17. Underground facilities and underground engineering in basements, semi-basements and ground floors.