- 白首穷经 báishǒuqióngjīng to study until old ageto continue studying or researching the classics until one is white-haired; to dedicate one's entire life to scholarship
- 白首齐眉 báishǒuqíméi to grow old togetherused of a married couple to describe growing old together in mutual respect; literally "white heads and even eyebrows"
