Capítulo 84: Phoenix egg

Zayne has taken care of Brie and twins' homework, while commander Song has taken care of the younger children's homework. It was consideration on Zayne's part, given commander Song grew up amidst war, while he himself had grown up in a semi peaceful era, as an heir with private tutors. What he did not know was that commander Song had two elite asian parents who were the pride of their families. As such, commander Song's mother made her child learn multiplication tables as she beheaded the dungeon beasts, and she still gave him exams as she washed the blood out of their clothes. 

That's how they made their journey through a fallen China from the Russian borders. The hundred bases were originally thousand bases. They needed nine hundred to die before they realized they would go extinct from infighting if they continued. That's how the Wulin's baby creating experiment was supported in the beginning.