The provided source material does not contain any biographical information, literary career details, or historical context regarding the author Joan Conquest. Instead, the text describes the Jin–Song wars (1115–1234), a series of military conflicts between the Jurchen-led Jin dynasty and the Han-led Song dynasty of China. The historical account details the transition from the Northern Song to the Southern Song, military technologies like early gunpowder weapons, and the eventual Mongol conquests.
Because the source lacks any details about Joan Conquest's life, writing career, era, or publications, a standard biographical profile cannot be established. All biographical fields have been set to null to reflect the absence of relevant data in the provided text.
