Una heroína temeraria e indomable que, si no puede cambiar el mundo, le prenderá fuego.Los chicos de Huaxia sueñan con ser emparejados con una chica para poder convertirse en pilotos de crisálidas, los gigantes mecanizados que se usan para luchar contra las criaturas que acechan al otro lado de la Gran Muralla. El mayor honor para una chica de Huaxia es que la seleccionen como piloto-concubina, aunque esto signifique una muerte segura.Cuando su hermana muere en una crisálida, Zetian le toma el relevo para vengarla. La revancha es rápida, brutal e... inesperada, y Zetian se gana el apelativo de la Viuda de Hierro; una temida mujer piloto que sacrifica a los hombres, y no al revés, para propulsar las crisálidas.Para domar su inquietante pero valiosísima fuerza mental, la emparejan con Li Shimin, el piloto más fuerte y controvertido de todo el país. Pero, ahora que ha probado el poder, Zetian no se doblegará tan fácilmente. Aprovechará sus dones y su infamia para sobrevivir a un intento tras otro de acabar con su vida, hasta averiguar por qué el sistema de pilotos depende tanto de destruir la vida de las chicas... y arrasarlo para siempre.ENGLISH DESCRIPTIONAn instant #1 New York Times bestseller! A Barnes & Noble's Best YA Fantasy & Adventure of 2021A New York Public Library Best Book for Teens (2021)A Canadian Children's Book Centre Favourite Book of the Year (2021)A Boston Globe Best Book of 2021A Cultured Vultures’ “21 Best Books Of 2021”A 2021 Goodreads Choice Awards Nominee, Best Young Adult & Science FictionNominated for the Science Fiction Writers of America's Andre Norton Nebula Award for Middle Grade and Young Adult FictionPacific 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 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.