A master investigator of the Great Qing, after solving all manner of ghostly and demonic cases, finally uncovers the mastermind behind every fiend and monster, as well as the shocking truth of his own origins. The peerless book The Xuanyuan Formula appears across time in the turbulent era from the late Qing to the Republic of China, igniting fierce conflict among Qing court masters, regional warlords, heroes of the martial world, and Japanese forces. The demonic miasma over the imperial capital, the dragon map that shook the world, the heirs of Xuanyuan... The foremost masters of Chinese and Japanese esoteric arts clash in underground palaces and atop lofty peaks. Perhaps history will be rewritten in this very moment.
