《太平广记·卷一百九十八·文章一》
他们在学习时，都很刻苦。为了写一篇文章，三人同坐在院中的大石上，不怕霜露打湿了衣服，直到把文章写完。
或同赋一篇，共坐庭石，霜积襟袖，课成乃已。
When they were studying, they were very diligent. To write an article, they sat together on the stone in the yard without fear of the frost and dew, until the article was finished. 