You Wouldn't Want to Work on the Great Wall of China! by Jacqueline Morley illustrated by David Antram*

Defenses You'd Rather Not Build
I read this aloud to my boys to support our study of Ancient China and the Qin Dynasty.
We learned a lot about this time period this book and were able to make connections with this book to our textbook and other books we are reading.
Very thorough and interesting! 
Perfect for reluctant readers and learners.
*Highly recommended.
-Borrowed from the library.