《汉书·传·严朱吾丘主父徐严终王》
皇童时编撰丞直时的旧事，讲论《诗》、《书》、《礼》、《乐》、《易》、《春秋》等书，广泛而详尽地搜罗奇异的玩好，征召精通《楚辞》的九江郡人被公，宣帝召见他，让他诵读《楚辞》。又征召才能出众的刘向、张子侨、华龙、柳褒等人待诏金马门。
宣帝时修武帝故事，讲论六艺群书，博尽奇异之好，征能为《楚辞》九江被公，召见诵读，益召高材刘向、张子侨、华龙、柳褒等侍诏金马门。
When he was young, the emperor compiled the chronicles of the former Chengzhi, and discussed the books of Poetry, Documents, Rituals, Music, Changes, and Spring and Autumn, comprehensively and in detail collecting strange and wonderful playthings and summoning Bei Gong, a man from Jiujiang who was proficient in the Poetry of Chu. Emperor Xuan summoned him, and had him recite the Poetry of Chu. He also summoned exceptionally talented men, such as Liu Xiang, Zhang Ziqiao, Hualong, and Liu Bao, to give advice at the Golden Horse Gate.