The Eunuchs are the ruling caste in Yanshen society. They originated as capable advisors during the Many Kingdoms Era of Yanshen who could be trusted as they did not have dynastic and legacy conflicts of interest that the nobility did but it was only during Harimar's Wars of Ascension did the eunuchs really rise to prominence, which saw their previous masters decimated under harimari savagery, and in return saw their new position as administrations of a Haless-wide Harimari Empire.
When the Harimari Empire eventually fell the eunuchs managed to maintain their iron grip in Yanshen, and have ruled the region in one way or another to this day.