It's an ancient Chinese statistics about how things around you can affect you, but no official/systematic recording were really being written down, only observations.

For those who don't believe it, don't trash it until you have ample knowledge on reading and understanding ancient Chinese writings. Go learn it for yourself and see if you can understand it. I'm not fluent in ancient Chinese writings, but from what I understand, there are some truth behind it.

Nowadays people tend to bash Feng Shui simply because they don't understand it and lack of scientific proofs, but most importantly TOO MANY BLOODY LIARS CHEATING PEOPLE AROUND WITH HALF-ASS KNOWLEDGE IN FENG SHUI. Nuf said...