Zu Online which refers to lots of classical sutras, has its setting based on the supernatural novel---The Life of Swordsman in a area called Zu. It is an elaborately and well-designed 3D MMORPG with a rich culture of immortals and knight-errants. Its most outstanding feature is putting emphasis on the traditional Chinese culture of monkery. The in-game quests will boost the development of storyline. Players will be able to taste flying by riding a sword, consubstantiating god and Buddha, forging mystic weapons, creating sects and other else amusing. Zu Mountain, these two characters do not only represent a range of mountains and streams. By contrast, considerable ghosts, immortals, knight-errants and uncanny fairylands have been tightly fastened to them. Zu Mountain has become the pronoun of the millenarian oriental culture of immortals and monkery. Zu Online is a story about the immortals monkery and battles against the evil.