Separately, China's Ministry of Culture and Tourism issued an emergency circular, urging all localities to investigate "hidden dangers" and strengthen supervision and inspection.
Wednesday's explosion at a BBQ restaurant prompted President Xi Jinping to order a safety overhaul across China, calling on all regions to rectify safety risks and "hidden dangers".
Another deadly fire at a hospital in Beijing in April killed 29 people.
Following Thursday's conference, Beijing mayor Yin Yong stressed that close attention should be paid to investigating and rectifying fire hazards.