"White hair and a youthful face" is formed by the parallel combination of two modifier-head phrases: "white hair" and "youthful face." The crane's feathers are pure white, so "white hair" is used as a metaphor for the graying hair of the elderly; "youthful face" refers to a childlike, rosy complexion. As a whole, it describes an older person who, though their hair has turned white, still has a rosy complexion, is vigorous in spirit, and looks as healthy as a child. This idiom is often used to depict an elderly person who is in good health and has aged well, carrying a clearly positive and complimentary tone, and expressing admiration for longevity and vitality. Its cultural background is related to the traditional Chinese longing for an ethereal, immortal-like bearing and for prolonged life. In traditional culture, the crane symbolizes longevity and nobility, so "white hair" not only refers to gray hair but also implies a sense of transcendence and unworldliness. It is mostly used in everyday conversation or literary description to portray an old person as full of energy and vigorous in old age, and it can also be used to wish an elder good health and long life.
📝 Example
1. Although this elderly gentleman is already eighty years old, he has the white hair and youthful complexion of a crane, and when he walks, he is even more energetic than young people. (Describing an elderly person with a healthy complexion and good health.)
2. The grandmother in the photo has white hair and a youthful complexion, her face full of smiles, and she does not look at all like someone already in her eighties or nineties. (Describing an elderly person with a rosy complexion and vigorous spirits.)