This book is meant to uncover the unknown secret of the true Mulan's story: that she was not a Chinese person, but a representative of the semi-nomadic people called Tuoba/Tabgachi with its origin in the Great Eurasian Steppe. This side of the story was never told before like it is in this book. The author attempted to write this story as a historical reconstruction true to the original story as it was told in the Ballad of Mulan, and based on his scientific research.