 A person's fortune is determined by looking up the branch and stem characters for each of these four parts of their birth time.The schools are the Scholarly School (學院派, "Xué Yuàn Pài") and the Professional School (江湖派, "Jiāng Hú Pài").The Scholarly School began with "Xú Zi Píng" (徐子平) at the beginning of the Song Dynasty.