"When people think about the Great Wall of China, that massive structure is likely to come to mind. But why did they build the wall in the first place, and how is it even still standing? This engaging nonfiction book, complete with black and white interior illustrations, will make readers feel like they've traveled back in time. It covers everything from how the Wall was built to what life in China was like at that time, and more. Find out interesting, little-known facts such as how working on the wall was often a form of punishment, and how the wall is so long it could wrap around the world twice!"--Provided by publisher.