Mulan meets Iron Widow in this thrilling silkpunk fantasy about a girl who must disguise herself as a boy and enter the famed and dangerous Engineers Guild trials to unravel the mystery of her fathers murder.Eighteen-year-old Aihui Ying dreams of becoming a world-class engineer like her father, but after his sudden murder, her life falls apart. Left with only a journal of her fathers engineering secrets and a jade pendant snatched from the assassin, a heartbroken Ying follows the trail to the capital and the prestigious Engineers Guild-a place that harbors her fathers hidden past-determined to discover why anyone would threaten a man who ultimately chose a quiet life over fame and fortune.