Day of the Dragon King (Mary Pope Osborne)

Summary: Who would burn books?  Jack and Annie find out when the Magic Tree House whisks them back to ancient China.  There, a powerful emperor called the Dragon King has ordered that all books be burned.  Will Jack and Annie be able to save at least one book?  Or will they be captured by the emperor's soldiers? (from amazon.com)

Where can I find it?: Lower/Middle School library, Lithgow building

Tags: Magic; Time travel; Tree houses; China; Fantasy fiction