1. ENVIRONMENT
Feng Shui is about Qi/energy Flow. A good environment with mountains and water at the right places will automatically produce good qi/energy just like the previous two excellent examples. Bill Gates and Li Ka-Shing’s house.
If you don’t know how to recognize a good environment, at least learn to avoid a bad one. Avoid houses that are facing T-junctions because they produce strong crashing qi/energy which is bad for occupants of the house.