Nowadays many old people have Alzheimer's disease and other dementias. An old couple, Mr. and Mrs. Wang, from Taiwan, have both suffered from the Alzheimer's for a long time. However, their love, so far, has changed little despite the diagnosis. Their story is just like what is described in an old song:＾ I can forget the whole world, but not you.￣ Mr. Wang, 85, is a retired army officer. He has been marrying his 69-year-old wife for 50 years. The couple suffers in succession the Alzheimer's disease when getting old. The disease took their health and memory away, but couldn't change their decades of deep feelings of each other. They forget everything, but still recognize each other's face. They look for the other's company at any time. Mr. and Mrs. Wang hold each other's hands tightly when taking a walk outside. Only losing the view of his wife for a minute, Mr. Wang will be very anxious. Mr. Wang usually got angry when forgetting his location. When feeling the bad temper of his husband, Mrs. Wang would lose her temper at the same time and help his husband to blame others. Recently, Mrs. Wang's condition worsened. She had to receive 24 hours' care in the care center. Mr. Wang had to leave his wife every evening. The separation was hard every time, Mr. Wang kept saying: ＾Where's my wife? I have to take her home.￣ Contrary to Mr. Wang's anxiety, Mrs. Wang, in a serious stage of disease, appeared happy every day. She liked to wear red dress and told the people around her that she was going to be married. When people asked her whom she will marry, she voiced out clearly and proudly the name of her husband. Her memory stopped at the happiest period of her life forever.