Hedong xian sheng ji (Collected Works by Mr. Hedong) contains the work of famed Tang writer and poet Liu Zongyuan (773‒819). The engraving of the text of this 13th century book is superb. The paper looks lustrous and the ink seems moist, with the charm of the work undiminished. Its exquisite quality is without equal. Hedong xian sheng ji was compiled by Liu Yuxi (772-842), a Tang poet, philosopher, and essayist, and printed during the reign of Xianchun (1265‒74) of the Southern Song, under the supervision of publisher Liao Yingzhong who was also the editor. This copy lacked juan 3‒5 and 10 and these were replaced with a Ming facsimile copy of the Song edition with the same script style, followed by a postscript by Zhu Yizun (1629‒1709). There are nine columns on each page, with each column containing 17 characters and smaller characters in double lines. The center column of each leaf bears a narrow width marker, called hei kou (black mouth), and each page has a double-lined frame. On the upper portion of the center column is the number of characters, and at the bottom, under the fishtail-shaped marker, is the three-character name of the publishing house, Shicaitang, and the name of the printer. At the end of each juan is a two-line printer’s colophon, in seal or clerical script, which reads: “Printed at Shicai by Liao.” The shape of the printer’s colophons varies. The printers included Sun Yuan, Qian Gong, Weng Shou, Yuan Qing, Cong Shan, Tong Fu, Li Wen, and Feng Yizhi. These names can be found in two compilations, this one by Liu Zongyuan and the other by Han Yu (768‒824), so it can be assumed that Liao Yingzhong published these two excellent collections at Shicaitang at the same time. The Song dynasty taboo words, such as 慎 shen, 敦 dun, and 廓 kuo, were strictly avoided by skipping the last stroke in the character. The writing styles varied between those of calligrapher Zhu Suiliang (596‒658) and Liu Zongyuan. This work was repeatedly reprinted by later generations. Pan Zongzhou (1867‒1939), owner of the Baolitang studio, only learned from historical documents about the Song edition of Hedong xian sheng ji printed by Liao Yingzhong, and he set his heart on acquiring it. This book was at one time held in Wanjuantang, the library of the Xiang family of Ming. During the Qing dynasty, it came into the collection of Song Luo and was held in his library, named Weisu Caotang. More recently it was held in Pan Zongzhou’s Baolitang, before it came into the collections of the National Library of China. The seal impressions in the book illustrate the provenance of its ownership, such as Xiang Yuanbian yin (Seal of Xiang Yuanbian), Xiang Dushou yin (Seal of Xiang Dushou), Xiang Zijing jia cang (Held by the family of Xiang Zijing), Molin Shanren (Style name of Xiang Yuanbian), Xiang Molin jian shang yin (Seal of Xiang Molin’s appreciation), Xiang Meolin fu mi ji zhi yin (Seal of Xiang Molin’s secret collection), Xiang shi Wanjuantang tu ji yin (Seal of books in Wanjuantang of the Xiang family), and Tianlaige (Hall of Heavenly Sound, one of Xiang’s buildings). Other seals include those of Song Luo, such as Shangqiu Song Luo shou cang shan ben (Rare books collected by Song Luo of Shangqiu), Muweng jian ding (Appreciated by Muweng), Weisu Caotang cang shu yin (Seal of the Weisu Caotang collection). The collections of Han Yu and Liu Zongyuan, printed by Liao Yingzhong, have been passed down through generations to the present. They are the only existing copies and are of extreme value.