Chinese (earth, metal, fire), mathematics (earth, water) and English (fire, metal, earth) are both liberal arts and science, so they are compulsory subjects. History is water, Confucius says Sichuan, the deceased is like a husband, history is liberal arts, and literature wins quality and history. Liberal arts belongs to Shui Mu Fire Protection (Dongsi Life), while science belongs to Golden Land (Xisi Life). Dongsi is strong in liberal arts and is suitable for liberal arts examination. We should learn science well, while life science in Grade Four is strong, and we should learn liberal arts well. Biology and medicine are liberal arts (wood water), physics is science (gold), chemistry is science (earth movement), geography is science (earth gold), and ideology and politics belong to Shui Mu fire and are liberal arts.