On February 16, 2006, a large area of carbon monoxide poisoning occurred in six counties (cities) of Jilin Province. Jilin Province also sent experts in health, weather and environmental protection to the Yunnan State in time to assist with local work. Zhang Zhang, deputy head of the provincial health department, said that on the evening of 16, after the expert group arrived at Yunnan Province, the local medical staff immediately consulted and proposed a treatment plan for the six severe patients at the Yunnan University Hospital, and on the morning of 17 arrived at the Tunas City Hospital for consultation and treatment of two other severe patients. Ji Zhang said that the rescue of the local hospital was comparatively strong, and the state of most addicts had changed much better than when they were poisoned.