Here is a brief summary of the operational logic of the cultivation society of the East Prosperity Nine States.
First, cultivation aptitude determines whether a person can cultivate. This aptitude is random and almost identical to the magical aptitude of the Western Continent.
Secondly, aptitude exists in both males and females, and there is no evidence suggesting women are less apt than men.
Therefore, in many cases, once a girl from a noble family is found to have aptitude, she must cultivate, regardless of the family elders' wishes. Otherwise, the family might lose a warrior and potentially be defeated and eliminated in the struggles of Kyushu.
The randomness leading to gender equality makes the societal structure and responsibilities of men and women in the cultivation society infinitely close to the modern society on Earth.
Even in a feudal era, the cultivation society adheres to monogamy. This applies to commoners, noble families, and the Emperor alike.
