Sishen CufflinkClassical Chinese Astronomy represented the heavens divided into four quarters representing the four seasons and directions, each section being ruled by a guardian deity.
North & Winter ruled by The Black Warier, XuanWu,
East & Spring by The Green Dragon, Qing Long,
South & Summer by the Red Phoenix, Zhu Que,
West & Autumn by the White Tiger, Bai Hu.