Why is door-to-door in Feng Shui not allowed?

Door-to-door is allowed in Feng Shui, which is the so-called door-to-door relationship; Require the width and height of the door to be exactly the same; The horizontal height of the foundation stone of the portal is consistent; The size and height of the gatehouse are exactly the same. If there is a slight difference, the weak side will decline. This brings great difficulties to the construction. In order to avoid disputes, we simply refused to go door to door. Therefore, there is no real match.