Nearly half of the world’s approximately 4.5 million people with Parkinson’s disease are in China, and nearly 80 percent of them do not even know about Parkinson’s disease until they are seen in a hospital. Today is the 21st World Parkinson’s Day, and this year’s theme is “Focus on Parkinson’s, Walk Together for Health”. What kind of disease is it? What are the signs and symptoms? Can it be cured? What should I pay attention to if I have Parkinson’s disease in my family?