At Xi'an a Library Containing "54,000 Rolls"

In 627, under the reign of Chinese emperor Taizong of Tang (Chinese: 唐太宗; pinyin: Táng Tàizōng, Wade-Giles: T'ai-Tsung)  a library was erected in the Chinese capital containing "some fifty-four thousand rolls" (Carter, Invention of Printing in China, 2nd ed [1955] 37).