Wu Cheng'en's classic Chinese novel Journey to the West follows the pilgrimage of the monk Xuan Zang escorted by three protectors: the Monkey King Sun Wu Kong, Pigsy, and Friar Sand. Throughout their journey westward to India, the pilgrims battle demons seeking immortality by eating the holy monk's flesh. After 14 arduous years, each traveler is promoted in heaven - Sun Wu Kong and Xuan Zang achieve Buddhahood, while the others receive lower posts.