The first public welfare project upon the establishment of DaAi Public Welfare Fund in 2015 is themed at concern for the elderly with cognitive disorder. There are 150,000-200,000 patients suffering from cognitive disorder in Beijing, 90% of whom requires family care. The greatest worry of the children of the elderly with cognitive disorder is the missing of the elderly. DaAi public welfare activities will be held in the communities in Beijing, which will provide continuous expert service such as the popularization lecture, evaluation and screening, and gratuitous diagnosis related to the cognitive disorder of the elderly, and appeal to the whole society to concern and understand the elderly with cognitive disorder. The elderly with cognitive disorder can obtain DaAi Wristband with GPS function provided by DaAi Fund, and enjoy the professional service. DaAi is always providing substantive help for the patients and families.