Taoism is the indigenous religion of the Chinese. The key purpose of the religion is to learn the “ Dao ” , cultivate the “ Dao ” , and practise the “ Dao ” . As “ Dao ” is central to the belief of this faith, the religion is called “ Daoism ” or “ Taoism ” . Taoism has existed since the time of the Yellow Emperor some 4700 years ago. Promoted by Lao Tzu during the Spring and Autumn Period, it was organized as a religious movement during the later years of the Eastern Han Dynasty by Celestial Master Zhang Daoling. The Book of Dao and its Virtue (Dao De Jing), regarded as the main text of Taoism, establishes that one can attain immortality through self-cultivation. Although there are many Taoist sects today, their teachings are all based on the principles of “ Dao ” .