Q.facing north to south
What is meaning of “face” in positioning a garden to face north AND south? Does face refer to the long sides of a rectangular-shaped garden? Or the short? Thank you.

A north-south orientation is best for growing low growing plants, allowing sunlight to reach both sides of the bed. Beds that contain taller plants do better on an east-west axis. However, as long as the garden bed gets a minimum of 6 hours of sunlight and plants don't shade each other out, it really doesn’t matter either way. North to south facing simply implies that the bed (or plants) are situated from the shadiest part (north) down to the sunniest area (south), which prevents them from shading out one another.