It means that the larger entrance door is facing the smaller door, which is also called big door with small door. Generally, the difference between the two doors is three meters, even if the front is opposite, it won't be urgent.

How far are these two doors apart? In the geomantic omen of Yangzhai, it is believed that most of the two doors are opened within three meters, that is to say, once the distance between the two doors exceeds three meters, there will be no rushing off, and there will be no situation in which the big door eats the small door or the big door covers the small door. The geomantic omen of both sides can be maintained in a normal state in the future.

So there is no need to worry too much about the door-to-door, not to mention that when building a mansion now, people will consciously avoid the door-to-door situation, or stagger the two doors, or open the distance between the two doors.

Solemnly declare: the answer is for reference only, please don't be blindly superstitious.