Why is the entrance door higher than the interior door?

From the perspective of geomantic omen, the indoor door cannot be higher than the entrance door, which is large, so it is also called the gate. The gate should be the highest and largest of all the portals in all the homes, at least not lower than the indoor room door, which is beneficial to the health of the owner and the wealth of the family. You can ask online Fortune Network five lines of gossip Fuzhen House to resolve it.

Figure 1, five lines of gossip Fu