Following the annexation of Song, Qin didn't stop—exploiting it to the fullest. Due to its position in between the major states of Qin and Wei, plus its outrageous wealth and various enterprises, Song carried enormous strategic importance—so much so that, had the other major powers envisioned the possibility of Song extermination, they would have sent their troops to besiege the Qin—not that this would have changed the outcome.
With the Demon Child's support, the Song women inherited most of their men's assets, soon establishing themselves as the new money-making machines of the region. Thanks to this move and the blissful side-effects of getting drunk on Huan-Yi jizz, the Primordial Evil secured the Song women's loyalty—turning them into Qin's bank.
The State as a whole benefited from the Song annexation. But the new Marchland of Shen benefited the most—and with the Demon Child's leadership, now pulled in billions of Blood Stones and other resources in yearly profit.
