"Divine Sparks are not hereditary, so why should godhood be? Even if two True Gods have a child, the result is still a Divine Spirit. God and Divine Spirit? Still a Divine Spirit. Our births follow strict ritual arrangements and have nothing to do with your undignified human ruts. Of course, the higher the parents' level of Divine Power, the more likely the children are to start with a Divine Spark—and the higher their innate Divine Power as well. We can also use our mortal shells to procreate the way you do, but the results are subpar at best." Giving Xiao Hu a tour of the Evernight Palace, Baxian led her towards a large ritual chamber where the conception of the Night's Fetal Spirits took place.
By now you should have a thorough understanding of Xinzi's background. Have we missed any detail? Tell me in the comment section.