《资治通鉴·宋纪·宋纪十》
当时，给事中郭善明生性乖巧善变，他又游说文成帝大肆兴筑宫殿。
是时，给事中郭善明，性倾巧，说帝大起宫室。
At that time, Guo Shanming, who was in charge of official documents, was resourceful and changeable. He urged Emperor Wucheng to build palaces on a large scale.