Feng Shui in the windows
The Feng Shui also gives tips for how we have to have our windows. There must be a balance between Yin (inner world) and Yan (world). That means that the windows are a key element of communication with the outside world from our home, intimate and familiar.
The window reveals the soul of the house, which means it has to be clean but not finish the whole show, while maintaining privacy. Ideally, in this case is to have any material like semi transparent curtain that let them see some of our home.

The windows must have somewhere to sit quietly contemplating what is outside. Far from what we think, we have to see what is but we also need to be able to see us. Otherwise, if you hide the interior of our house, we would give a dark and sinister image, feeling so bad vibrations from outside.

The ideal window has to be wide open, with folding leaves. The sliding is not usually recommended because most are making noise. Alternatively we can use a slide to be folded or to collect gently, quietly.
As many of you sure that you have views with high traffic and little nature, the ideal is to put plants to enhance that view as monotonous and cold. A set of lenses that transform light also can solve this problem. Imagination plays an important role to relax with other views.