The instant #1 New York Times bestseller, now available in a stunning new paperback look with bonus content.

Pacific Rim meets The Handmaid's Tale in this blend of Chinese history and mecha science fiction for YA readers.**

The boys of Huaxia dream of pairing up with girls to pilot Chrysalises, giant transforming robots that can battle the aliens that lurk beyond the Great Wall of China. It doesn't matter that the girls die from the mental strain.

When 18-year-old Zetian offers herself up as a concubine-pilot, it's to assassinate the ace male pilot responsible for her sister's death. But when she gets her vengeance, it becomes clear that she is an Iron Widow, a rare kind of female pilot who can sacrifice males to power up Chrysalises instead.

To tame her frightening yet valuable mental strength, she is paired up with Li Shimin, the strongest male pilot in Huaxia, yet feared and ostracized for killing his father and brothers. But now that Zetian has had a taste of power, she will not cower so easily. She will take over instead, then leverage their combined strength to force her society to stop failing its women and girls. Or die trying.

This deluxe new paperback edition features eight pages of Chrysalis concept art and a discussion guide.

The boys of Huaxia dream of pairing up with girls to pilot Chrysalises, giant transforming robots that can battle the mecha aliens that lurk beyond the Great Wall. It doesn't matter that the girls often die from the mental strain.

When 18-year-old Zetian offers herself up as a concubine-pilot, it's to assassinate the ace male pilot responsible for her sister's death. But she gets her vengeance in a way nobody expected—she kills him through the psychic link between pilots and emerges from the cockpit unscathed. She is labeled an Iron Widow, a much-feared and much-silenced kind of female pilot who can sacrifice boys to power up Chrysalises instead.​

To tame her unnerving yet invaluable mental strength, she is paired up with Li Shimin, the strongest and most controversial male pilot in Huaxia​. But now that Zetian has had a taste of power, she will not cower so easily. She will miss no opportunity to leverage their combined might and infamy to survive attempt after attempt on her life, until she can figure out exactly why the pilot system works in its misogynist way—and stop more girls from being sacrificed.