This book is adapted from The Balled of Mulan--a classic literary works in ancient China. It tells the story of a girl named Mu Lan who disguised herself as a man to join the army in place of her father. She fought bravely on the battlefield and won victories one after another. It was not until the war was over and she took off her uniform that everyone realized this great warrior was a girl. This story fully demonstrates the wisdom and courage of Chinese women in ancient times.