have white hair and a ruddy complexion
Tongyan Hefa, a Chinese idiom, Pinyin is t ó ngy á NH è f à, which means crane feathers like snow-white hair, children like ruddy complexion; describes the elderly look good. It's from sleepwalking.
Idiom explanation
Yan: face.
The origin of Idioms
Tian Ying, Tang Dynasty, said in his "sleepwalking Luofu" that "he said he was neither a God nor an immortal, and his hair was as old as a child."
Idiom usage
Combined; as object and attribute; with commendatory meaning. (Hua Tuo) his face is like a child, and his hair is like a crane. (Chapter 15 of romance of the Three Kingdoms by Luo Guanzhong in Ming Dynasty)
have white hair and a ruddy complexion
the peach trees were in bloom and the willows were turning green - táo hóng liǔ lǜ