The relevant person in charge of the accident investigation team of the State Council answered reporters' questions on the investigation of major fire accidents in Beijing Changfeng Hospital. The investigation determined that this was a major production safety liability accident caused by the illegal implementation of renovation projects by the hospital. The ignition of combustible materials near the site, the open flame and high-temperature smoke generated ignited the wooden decoration materials in the building. The initial treatment was ineffective, and the evacuation and transfer of patients on high-floor floors could not be effectively organized.