Feng means wind and shui means water. In Chinese culture wind and water are associated with good health, thus good feng shuicame to mean good fortune, while bad feng shui means bad luck, or misfortune.
Feng Shui is based on the Taoist vision and understanding of nature, particularly on the idea that the land is alive and filled with Chi, or energy. The ancient Chinese believed that the land's energy could either make or break the kingdom, so to speak. The theories of yin and yang, as well as the five feng shui elements, are some of the basic aspects of a feng shui analysis that come from Taoism.