“唯有我者，世间无双”德云社20周年庆典完整版

　　He is forty years old. He left his wife and children in order to care for his mother, who is under seventy. She has Alzheimer's disease. She begins to forget who she is, and ceases to recognize her son. The hero has one goal in life - by all means keep her mother’s memory of herself. He takes her from village to town to start a new life with her.