Rule As A Monarch Under The Skirts is a Manga/Manhwa/Manhua in english language, Manhua series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

My soul transmigrated, to a world where only women could wield spiritual power. All the philosophers; Confucianism, Taoism, Mohism, all of them became women’s way of cultivating their spiritual power. As a weak man who had no spiritual power, with the help of the system, I want civil and military officials to fill up the palace. All the princesses and empress will serve under me.