The second part of the documentary trilogy "Northwest Lu", "Alzheimer" focuses on the state of life of the elderly in their twilight years, mainly by showing the relationship between mother and daughter (there are also a part of mother and child relationship) to describe the real state of life of the elderly in their twilight years; it also describes the daily conversations between the grandparents and the life imagery hidden in the details of life; Alzheimer is not a disease, but just a part of the elderly walking through life. Alzheimer's is not a disease, but just a part of the life of the elderly, which is equivalent to the process of the reverse growth of life consciousness, and to look down on the boundaries of life and death; in addition to this, there is also the significance of the quietness of the cozy village life.