Ladies and gentlemen, the following we carry out the knowledge literacy of societies and associations, not just for the people, we experts in the medical field in the position of some societies or associations, may also not understand their academic status, can also read oh. First of all, there are some big and famous international societies such as International Movement Disorders Society, International Stroke Association, International Society of Cognitive Disorders, etc., which are organized and managed by international experts and top medical journals (all of them are non-governmental organizations). These associations or societies are not in the scope of what I am talking about today. Class I societies or associations: Internationally, each country has its own societies and associations, which are nominally non-governmental organizations, but Chinese societies are registered and managed by the government. Chinese societies in the field of medicine are generally divided into four levels. 30 years ago, Chinese societies were only affiliated with four major societies or associations (Level I societies), namely: Chinese Medical Association, Chinese Society of Traditional Chinese Medicine, Chinese Society of Integrative Medicine, Chinese Society of Acupuncture and Moxibustion, and with the further development of the medical field and clinical needs, some Level I societies were gradually added, such as Chinese Society of Immunology, Chinese Physicians Association, Chinese Ethnic Medicine The person in charge of these societies or associations is generally called president or chairman (main committee member), followed by vice president (vice-chairman), secretary general, executive director (standing committee member), committee member, and youth member according to the level. The president or chairman of these I-level societies or associations is generally an academician or a famous expert in this field in the national health system, a national medical leader; the director (standing committee) is generally a famous expert at least at the level of dean; the members are generally famous experts or authorities in this field in each province and municipality, the number of members is limited, there may be only 1-2 members in each province and municipality directly under the Central Government, and the youth members are likewise provincial and municipal members. Young members are also the very outstanding young experts with significant scientific achievements in this field from each province and municipality, generally there are only 1-2 places in each province and municipality. Level II societies or associations: Generally, they are subordinate organizations of Level I societies or associations, and can be professional branches of Level II societies, such as the Neurology Committee of the Chinese Society of Integrative Medicine, which is a national society, with national experts as the main committee, vice main committee, and standing committee, and most of the main committee members are academicians, with very few targets for national members. The other II level society is the II level society of the I level society established in each province, city and autonomous region, such as the Shanghai Medical Association (II level society of the Chinese Medical Association), the Shanghai Medical Association (II level society of the Chinese Medical Association), the Shanghai Society of Integrative Medicine (II level society of the Chinese Society of Integrative Medicine), the Zhejiang Medical Association, the Shanghai Society of Traditional Chinese Medicine and so on. Most of the presidents or chairmen of these societies are also academicians or renowned experts in this field equivalent to the level of university presidents, vice presidents, health bureau directors, hospital directors, and vice presidents or vice chairmen are generally renowned experts at the level of deans or directors of national key specialties. Level III societies or associations: they are composed of the real famous experts working in the front line of hospitals under the level II societies or associations, such as the Neuroendocrine Committee of the Shanghai Society of Integrative Medicine (affiliated with the Shanghai Society of Integrative Medicine), the Shanghai Neuroimmunology Society (affiliated with the Shanghai Immunology Society), the Neurology Committee of the Shanghai Medical Association (affiliated with the Shanghai Medical Association), the Shanghai Physicians Association The president (chairman) or vice president (vice-chairman) of this society or association is a national or provincial expert in this field, a leader in clinical and scientific research in this field, and the standing committee of this III association or society is generally the head of the department of each large general hospital, with considerable academic attainment; and the members of the III society The members of the III Society are generally the academic leaders and heads of departments of general hospitals, and each hospital has a quota and a strict audit. Young members are outstanding talents in clinical and scientific research in this field, with certain academic attainments or academic achievements. Class IV societies or groups: Municipal or regional academic institutions affiliated with Class III societies, which can be divided into district-level societies in municipalities directly under the central government, such as Hangzhou Neurology Specialty Committee, Yinchuan Endocrine Society, Pudong New District Neurology Specialty Committee of Shanghai Society of Integrative Medicine, etc.; they can also be specialty subgroups of Class III societies, such as Neurodegeneration Specialty Group of Shanghai Neuroendocrine Specialty Committee of Integrative Medicine. Neuroimmunology Group of the Specialized Committee of Neurology of Shanghai Medical Association, etc. The chairman or vice-chairman and the standing committee are regional or municipal leaders in this field, and have high academic influence in this field.