Shangshu gushi 尚書故實 "Factual evidence from ancient books" is a collection written during the Tang period 唐 (618-907) by Li Chuo 李綽 (d. 862), about whose life not much is known. Lao Ge 勞格 (1820-1864) says in his Langguan shizhu timing kao 郎官石柱題名考 that Li Chuo was a descendant of a family of officials and a son of Li Kuanzhong 李寬中, a descendant of Li Shu 李紓 (778-834), who had been a member of the imperial house and was Vice Minister of Personnel (libu shilang 吏部侍郎). Li Chuo hailed from the commandery of Zhao 趙. His courtesy name was Jianmeng 肩孟. It is known that he had a quarrel with Qian Yu 錢珝, Chamberlain for Ceremonials (taichang 太常) about court robes. Li Chuo is also mentioned in a stone inscription called Shengxianmiao xinggong ji 升仙廟興功記 that was allegedly compiled by him. According to this inscription, Li bore the title of a director in the Ministry of Rites (libu langzhong 禮部郎中).
The thematic range of the short Shangshu gushi is very wide. It mainly includes stories of contemporary significance, but also investigates some older affairs. It is an interesting source for the social history of the latter half of the Tang period.