《太平广记·卷二百三十一·器玩三》
吕晖等看罢这纸素书后，就将镜炉移到船上，于五月五日午时，在扬子江上铸镜。
吕晖等遂移镜炉置船中，以五月五日午时，乃于扬子江铸之。
After seeing this book of unbleached silk, Lü Hui and others moved the melting furnace on the ship where they cast the mirror on the Yangtze River in the noon on May 5.