The affection between father and son has always been a kind of emotion that is difficult to express. Whether it is father to son or son to father, emotional expressions are mostly interpreted by practical actions rather than words. When the father was a child, the father protected his son, and the son relied on the father. It was the relationship between middle-aged people and children. As the age grew, the son grew up, and the father gradually grew old. The son became rebellious and the father began to weaken. Powerless, became dependent on his son. And life also undergoes a dramatic reincarnation at this time. When the son does not yet fully understand the father, he sometimes thinks that the father is a burden, and if the father suffers from Alzheimer’s at this time, he will become like a child. He is so self-willed, but the protection of his son subconsciously has not disappeared. Even if he is a wayward old naughty boy, he will not hesitate to come forward when his son is in danger.