Qi
Qi (ch'i) [Qi (pronounced "chee") is a movable positive or negative life force which plays an essential role in Feng Shui.
Qi rides the wind and scatters, but is retained when encountering water.
In Feng Shui, it refers to "energy", in the sense of "life force".
Feng Shui is the study of how Qi, the universal life force, affects our health, wealth and relationships.
Sheng Qi is positive qi and it carries auspicious currents that nourish your well being.
Sha Qi is a negative qi and it carries inauspicious currents that create negative influences on you which can impact your health and livelihood.
Qi exists in our homes and the environment whether we believe in it or not.
Qi is energy like sunshine energy which we can feel but cannot see.