Stroke, also known as stroke, is a “killer” that threatens the health of the elderly and even some middle-aged and young people. How does a stroke occur? What should be paid attention to in preventing stroke? What is the “golden time” for the treatment of stroke patients? Xinhua Daily Health Client “Doctor Says” video interview column invited Professor Xu Yun, director of the Department of Neurology, Drum Tower Hospital Affiliated to Nanjing University School of Medicine, to explain the key points of scientific prevention and treatment of stroke, so that everyone will no longer smell the “wind”.