Yijin is a college for Sorcerers. Being a school to teach all forms of magic so it's students can go out and aspire to become great mages capable of many things. Each person is naturally born with an affinity towards a certain form of magic. Called Innate Afflictions. But are capable of learning other magics at a lessened effectiveness. Usually only taught basic spells outside of their main magic type. Its a welcoming place with many types of humanoid species. No discrimination allowed.