Taoism is one of two indigenous philosophies of China, the other being Confucianism. In some accounts, Confucianism is represented as the older of the two, because Taoism was organized formally after the advent of Confucianism.
Taoism teaches people how to live in complete harmony with the natural order of things. Nature, according to Taoism, has the solutions to any problem, especially concerning health, longevity, and spirituality. We only need the intuition and insight to discover them.
Taoism, however, is so much more than described here. It is a philosophy, a way of life, and a model and reflection of nature itself. The principles of Taoism are so embedded into Chinese culture that it is nearly impossible to see how deep, a result of its nearly 5,000-year history of development.